/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:19:29,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:19:29,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:19:29,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:19:29,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:19:29,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:19:29,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:19:29,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:19:29,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:19:29,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:19:29,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:19:29,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:19:29,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:19:29,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:19:29,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:19:29,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:19:29,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:19:29,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:19:29,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:19:29,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:19:29,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:19:29,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:19:29,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:19:29,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:19:29,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:19:29,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:19:29,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:19:29,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:19:29,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:19:29,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:19:29,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:19:29,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:19:29,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:19:29,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:19:29,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:19:29,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:19:29,604 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 04:19:29,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:19:29,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:19:29,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:19:29,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:19:29,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:19:29,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:19:29,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:19:29,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:19:29,634 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:19:29,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:19:29,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:19:29,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:19:29,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:19:29,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:19:29,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:19:29,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:19:29,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:19:29,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:19:29,636 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:19:29,636 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:19:29,637 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:19:29,637 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:19:29,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:19:29,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:19:29,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:19:29,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:19:29,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:19:29,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:19:29,870 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:19:29,876 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:19:29,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06.c [2022-01-10 04:19:29,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413aa0907/0fd7d56a346b4348a7bb0efd7ce13948/FLAG87a2dfc0c [2022-01-10 04:19:30,507 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:19:30,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06.c [2022-01-10 04:19:30,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413aa0907/0fd7d56a346b4348a7bb0efd7ce13948/FLAG87a2dfc0c [2022-01-10 04:19:30,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413aa0907/0fd7d56a346b4348a7bb0efd7ce13948 [2022-01-10 04:19:30,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:19:30,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:19:30,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:19:30,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:19:30,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:19:30,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:19:30" (1/1) ... [2022-01-10 04:19:30,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73948688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:30, skipping insertion in model container [2022-01-10 04:19:30,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:19:30" (1/1) ... [2022-01-10 04:19:30,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:19:31,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:19:31,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06.c[57034,57047] [2022-01-10 04:19:31,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:19:31,632 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:19:31,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06.c[57034,57047] [2022-01-10 04:19:31,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:19:31,793 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:19:31,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31 WrapperNode [2022-01-10 04:19:31,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:19:31,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:19:31,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:19:31,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:19:31,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,914 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 04:19:31,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:19:31,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:19:31,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:19:31,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:19:31,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:19:31,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:19:31,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:19:31,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:19:31,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (1/1) ... [2022-01-10 04:19:31,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:19:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:19:32,019 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 04:19:32,028 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 04:19:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:19:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:19:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:19:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:19:32,131 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:19:32,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:19:33,535 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:19:33,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:19:33,546 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:19:33,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:19:33 BoogieIcfgContainer [2022-01-10 04:19:33,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:19:33,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:19:33,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:19:33,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:19:33,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:19:30" (1/3) ... [2022-01-10 04:19:33,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a3b36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:19:33, skipping insertion in model container [2022-01-10 04:19:33,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:19:31" (2/3) ... [2022-01-10 04:19:33,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a3b36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:19:33, skipping insertion in model container [2022-01-10 04:19:33,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:19:33" (3/3) ... [2022-01-10 04:19:33,554 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label06.c [2022-01-10 04:19:33,557 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:19:33,557 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:19:33,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:19:33,602 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 04:19:33,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:19:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:19:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 04:19:33,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:19:33,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:33,638 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:19:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:19:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1533533723, now seen corresponding path program 1 times [2022-01-10 04:19:33,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:19:33,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701624649] [2022-01-10 04:19:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:19:33,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:19:33,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:19:33,657 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 04:19:33,658 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 04:19:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:19:33,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 04:19:33,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:19:45,739 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 04:19:45,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:19:45,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:19:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701624649] [2022-01-10 04:19:45,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701624649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:19:45,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:19:45,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 04:19:45,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542598327] [2022-01-10 04:19:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:19:45,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:19:45,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:19:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:19:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:19:45,767 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:19:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:19:49,007 INFO L93 Difference]: Finished difference Result 718 states and 1265 transitions. [2022-01-10 04:19:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:19:49,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-01-10 04:19:49,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:19:49,026 INFO L225 Difference]: With dead ends: 718 [2022-01-10 04:19:49,026 INFO L226 Difference]: Without dead ends: 352 [2022-01-10 04:19:49,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 04:19:49,035 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 431 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:19:49,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 464 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 04:19:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-10 04:19:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-01-10 04:19:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.4586894586894588) internal successors, (512), 351 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:19:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 512 transitions. [2022-01-10 04:19:49,107 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 512 transitions. Word has length 169 [2022-01-10 04:19:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:19:49,109 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 512 transitions. [2022-01-10 04:19:49,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 8 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:19:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 512 transitions. [2022-01-10 04:19:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 04:19:49,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:19:49,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:49,127 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 04:19:49,338 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 04:19:49,339 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:19:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:19:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1766966224, now seen corresponding path program 1 times [2022-01-10 04:19:49,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:19:49,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283890523] [2022-01-10 04:19:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:19:49,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:19:49,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:19:49,347 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 04:19:49,373 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 04:19:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:19:49,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 04:19:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:20:02,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:02,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:02,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283890523] [2022-01-10 04:20:02,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283890523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:02,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:02,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:20:02,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922518828] [2022-01-10 04:20:02,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:02,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:20:02,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:20:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:20:02,113 INFO L87 Difference]: Start difference. First operand 352 states and 512 transitions. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 9 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:04,837 INFO L93 Difference]: Finished difference Result 730 states and 1182 transitions. [2022-01-10 04:20:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:20:04,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 9 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2022-01-10 04:20:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:04,841 INFO L225 Difference]: With dead ends: 730 [2022-01-10 04:20:04,841 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 04:20:04,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:20:04,843 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 487 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:04,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 375 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 04:20:04,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 04:20:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-01-10 04:20:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.339430894308943) internal successors, (659), 492 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 659 transitions. [2022-01-10 04:20:04,857 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 659 transitions. Word has length 176 [2022-01-10 04:20:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:04,857 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 659 transitions. [2022-01-10 04:20:04,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 9 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:04,858 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 659 transitions. [2022-01-10 04:20:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 04:20:04,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:04,859 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:20:04,884 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 04:20:05,070 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 04:20:05,071 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1275332625, now seen corresponding path program 1 times [2022-01-10 04:20:05,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:05,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465319294] [2022-01-10 04:20:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:05,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:05,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:05,083 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 04:20:05,085 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 04:20:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:05,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:05,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:20:05,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:05,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:05,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465319294] [2022-01-10 04:20:05,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465319294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:05,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:05,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:05,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891274520] [2022-01-10 04:20:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:05,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:05,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:05,499 INFO L87 Difference]: Start difference. First operand 493 states and 659 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:06,378 INFO L93 Difference]: Finished difference Result 954 states and 1427 transitions. [2022-01-10 04:20:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2022-01-10 04:20:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:06,382 INFO L225 Difference]: With dead ends: 954 [2022-01-10 04:20:06,382 INFO L226 Difference]: Without dead ends: 717 [2022-01-10 04:20:06,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 182 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 04:20:06,383 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 88 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:06,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 118 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:20:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-01-10 04:20:06,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 703. [2022-01-10 04:20:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.4116809116809117) internal successors, (991), 702 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 991 transitions. [2022-01-10 04:20:06,400 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 991 transitions. Word has length 184 [2022-01-10 04:20:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:06,400 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 991 transitions. [2022-01-10 04:20:06,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 991 transitions. [2022-01-10 04:20:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 04:20:06,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:06,402 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:20:06,411 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 04:20:06,608 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 04:20:06,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1433788651, now seen corresponding path program 1 times [2022-01-10 04:20:06,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:06,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482988721] [2022-01-10 04:20:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:06,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:06,612 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 04:20:06,617 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 04:20:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:06,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:06,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:20:06,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:06,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:06,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482988721] [2022-01-10 04:20:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482988721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:06,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:06,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:06,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318498084] [2022-01-10 04:20:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:06,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:06,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:06,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:06,973 INFO L87 Difference]: Start difference. First operand 703 states and 991 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:07,438 INFO L93 Difference]: Finished difference Result 1587 states and 2423 transitions. [2022-01-10 04:20:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2022-01-10 04:20:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:07,443 INFO L225 Difference]: With dead ends: 1587 [2022-01-10 04:20:07,443 INFO L226 Difference]: Without dead ends: 1140 [2022-01-10 04:20:07,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 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 04:20:07,445 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 360 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:07,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 555 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 04:20:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-01-10 04:20:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1138. [2022-01-10 04:20:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.4881266490765173) internal successors, (1692), 1137 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1692 transitions. [2022-01-10 04:20:07,470 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1692 transitions. Word has length 189 [2022-01-10 04:20:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:07,471 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 1692 transitions. [2022-01-10 04:20:07,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1692 transitions. [2022-01-10 04:20:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 04:20:07,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:07,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:20:07,490 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 04:20:07,683 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 04:20:07,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1278830310, now seen corresponding path program 2 times [2022-01-10 04:20:07,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:07,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681194825] [2022-01-10 04:20:07,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 04:20:07,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:07,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:07,689 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 04:20:07,690 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 04:20:07,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 04:20:07,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 04:20:07,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:07,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:20:08,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:08,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:08,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681194825] [2022-01-10 04:20:08,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681194825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:08,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:08,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:08,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331079012] [2022-01-10 04:20:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:08,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:08,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:08,084 INFO L87 Difference]: Start difference. First operand 1138 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:09,402 INFO L93 Difference]: Finished difference Result 2864 states and 4500 transitions. [2022-01-10 04:20:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-01-10 04:20:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:09,408 INFO L225 Difference]: With dead ends: 2864 [2022-01-10 04:20:09,408 INFO L226 Difference]: Without dead ends: 1982 [2022-01-10 04:20:09,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 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 04:20:09,410 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 236 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:09,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 289 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 04:20:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2022-01-10 04:20:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1957. [2022-01-10 04:20:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1956 states have (on average 1.5097137014314927) internal successors, (2953), 1956 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2953 transitions. [2022-01-10 04:20:09,473 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2953 transitions. Word has length 191 [2022-01-10 04:20:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:09,474 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 2953 transitions. [2022-01-10 04:20:09,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2953 transitions. [2022-01-10 04:20:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-10 04:20:09,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:09,477 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:20:09,495 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 04:20:09,693 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 04:20:09,694 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1748266242, now seen corresponding path program 1 times [2022-01-10 04:20:09,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:09,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387942630] [2022-01-10 04:20:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:09,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:09,697 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 04:20:09,699 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 04:20:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:09,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:09,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 04:20:10,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:10,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387942630] [2022-01-10 04:20:10,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387942630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:10,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:10,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:10,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264279196] [2022-01-10 04:20:10,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:10,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:10,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:10,095 INFO L87 Difference]: Start difference. First operand 1957 states and 2953 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:10,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:10,986 INFO L93 Difference]: Finished difference Result 5295 states and 8238 transitions. [2022-01-10 04:20:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:10,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2022-01-10 04:20:10,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:10,995 INFO L225 Difference]: With dead ends: 5295 [2022-01-10 04:20:10,995 INFO L226 Difference]: Without dead ends: 3594 [2022-01-10 04:20:10,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 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 04:20:10,997 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 275 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:10,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 290 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:20:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-01-10 04:20:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3592. [2022-01-10 04:20:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3591 states have (on average 1.4397103870788082) internal successors, (5170), 3591 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5170 transitions. [2022-01-10 04:20:11,038 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5170 transitions. Word has length 197 [2022-01-10 04:20:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:11,038 INFO L470 AbstractCegarLoop]: Abstraction has 3592 states and 5170 transitions. [2022-01-10 04:20:11,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5170 transitions. [2022-01-10 04:20:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-10 04:20:11,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:11,043 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:11,059 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 04:20:11,249 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 04:20:11,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:11,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash 413925161, now seen corresponding path program 1 times [2022-01-10 04:20:11,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:11,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260767838] [2022-01-10 04:20:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:11,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:11,254 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 04:20:11,255 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 04:20:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:11,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:20:11,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 04:20:11,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:11,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260767838] [2022-01-10 04:20:11,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260767838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:11,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:11,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:11,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887805851] [2022-01-10 04:20:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:11,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:20:11,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:20:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:20:11,607 INFO L87 Difference]: Start difference. First operand 3592 states and 5170 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:12,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:12,797 INFO L93 Difference]: Finished difference Result 13522 states and 19783 transitions. [2022-01-10 04:20:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:20:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2022-01-10 04:20:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:12,824 INFO L225 Difference]: With dead ends: 13522 [2022-01-10 04:20:12,825 INFO L226 Difference]: Without dead ends: 10186 [2022-01-10 04:20:12,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:20:12,832 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 526 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:12,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 540 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:20:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2022-01-10 04:20:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 10171. [2022-01-10 04:20:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10171 states, 10170 states have (on average 1.4173058013765978) internal successors, (14414), 10170 states have internal predecessors, (14414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10171 states to 10171 states and 14414 transitions. [2022-01-10 04:20:12,958 INFO L78 Accepts]: Start accepts. Automaton has 10171 states and 14414 transitions. Word has length 197 [2022-01-10 04:20:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:12,958 INFO L470 AbstractCegarLoop]: Abstraction has 10171 states and 14414 transitions. [2022-01-10 04:20:12,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10171 states and 14414 transitions. [2022-01-10 04:20:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 04:20:12,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:12,973 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:20:12,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 04:20:13,191 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 04:20:13,192 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:13,192 INFO L85 PathProgramCache]: Analyzing trace with hash -216495094, now seen corresponding path program 1 times [2022-01-10 04:20:13,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:13,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022025153] [2022-01-10 04:20:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:13,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:13,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:13,195 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 04:20:13,196 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 04:20:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:13,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:13,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 04:20:13,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:13,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:13,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022025153] [2022-01-10 04:20:13,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022025153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:13,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:13,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:13,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919811363] [2022-01-10 04:20:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:13,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:13,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:13,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:13,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:13,575 INFO L87 Difference]: Start difference. First operand 10171 states and 14414 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:14,617 INFO L93 Difference]: Finished difference Result 28621 states and 40709 transitions. [2022-01-10 04:20:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:14,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2022-01-10 04:20:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:14,664 INFO L225 Difference]: With dead ends: 28621 [2022-01-10 04:20:14,664 INFO L226 Difference]: Without dead ends: 18705 [2022-01-10 04:20:14,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 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 04:20:14,680 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 234 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:14,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 328 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:20:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18705 states. [2022-01-10 04:20:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18705 to 18697. [2022-01-10 04:20:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18697 states, 18696 states have (on average 1.3032734274711169) internal successors, (24366), 18696 states have internal predecessors, (24366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18697 states to 18697 states and 24366 transitions. [2022-01-10 04:20:14,949 INFO L78 Accepts]: Start accepts. Automaton has 18697 states and 24366 transitions. Word has length 203 [2022-01-10 04:20:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:14,950 INFO L470 AbstractCegarLoop]: Abstraction has 18697 states and 24366 transitions. [2022-01-10 04:20:14,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 18697 states and 24366 transitions. [2022-01-10 04:20:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-01-10 04:20:14,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:14,965 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:20:14,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 04:20:15,174 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 04:20:15,174 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash -5473683, now seen corresponding path program 1 times [2022-01-10 04:20:15,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:15,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987291151] [2022-01-10 04:20:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:15,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:15,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:15,177 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 04:20:15,179 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 04:20:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:15,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 04:20:15,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:15,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:15,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987291151] [2022-01-10 04:20:15,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987291151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:15,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:15,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:20:15,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429422344] [2022-01-10 04:20:15,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:15,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:15,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:15,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:15,430 INFO L87 Difference]: Start difference. First operand 18697 states and 24366 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:15,978 INFO L93 Difference]: Finished difference Result 36239 states and 47409 transitions. [2022-01-10 04:20:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:15,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2022-01-10 04:20:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:16,002 INFO L225 Difference]: With dead ends: 36239 [2022-01-10 04:20:16,003 INFO L226 Difference]: Without dead ends: 17797 [2022-01-10 04:20:16,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 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 04:20:16,018 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:16,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 04:20:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2022-01-10 04:20:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 17797. [2022-01-10 04:20:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17797 states, 17796 states have (on average 1.2452236457630927) internal successors, (22160), 17796 states have internal predecessors, (22160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17797 states to 17797 states and 22160 transitions. [2022-01-10 04:20:16,219 INFO L78 Accepts]: Start accepts. Automaton has 17797 states and 22160 transitions. Word has length 204 [2022-01-10 04:20:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:16,220 INFO L470 AbstractCegarLoop]: Abstraction has 17797 states and 22160 transitions. [2022-01-10 04:20:16,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17797 states and 22160 transitions. [2022-01-10 04:20:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-10 04:20:16,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:16,230 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:16,249 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 04:20:16,437 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 04:20:16,437 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1419248325, now seen corresponding path program 1 times [2022-01-10 04:20:16,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:16,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436339185] [2022-01-10 04:20:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:16,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:16,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:16,442 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 04:20:16,443 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 04:20:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:16,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:20:16,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-10 04:20:16,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:16,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:16,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436339185] [2022-01-10 04:20:16,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436339185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:16,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:16,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:16,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97954769] [2022-01-10 04:20:16,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:16,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:20:16,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:20:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:20:16,932 INFO L87 Difference]: Start difference. First operand 17797 states and 22160 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:17,930 INFO L93 Difference]: Finished difference Result 35355 states and 44085 transitions. [2022-01-10 04:20:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:20:17,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2022-01-10 04:20:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:17,987 INFO L225 Difference]: With dead ends: 35355 [2022-01-10 04:20:17,987 INFO L226 Difference]: Without dead ends: 17813 [2022-01-10 04:20:18,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:20:18,002 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 432 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:18,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 52 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 04:20:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17813 states. [2022-01-10 04:20:18,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17813 to 17797. [2022-01-10 04:20:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17797 states, 17796 states have (on average 1.2290402337603956) internal successors, (21872), 17796 states have internal predecessors, (21872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17797 states to 17797 states and 21872 transitions. [2022-01-10 04:20:18,181 INFO L78 Accepts]: Start accepts. Automaton has 17797 states and 21872 transitions. Word has length 244 [2022-01-10 04:20:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:18,181 INFO L470 AbstractCegarLoop]: Abstraction has 17797 states and 21872 transitions. [2022-01-10 04:20:18,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 17797 states and 21872 transitions. [2022-01-10 04:20:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-01-10 04:20:18,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:18,195 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:20:18,221 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 04:20:18,404 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 04:20:18,404 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash 320668410, now seen corresponding path program 1 times [2022-01-10 04:20:18,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:18,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707587143] [2022-01-10 04:20:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:18,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:18,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:18,408 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 04:20:18,409 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 04:20:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:18,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:18,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 04:20:18,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:18,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:18,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707587143] [2022-01-10 04:20:18,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707587143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:18,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:18,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:20:18,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035016094] [2022-01-10 04:20:18,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:18,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:18,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:18,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:18,894 INFO L87 Difference]: Start difference. First operand 17797 states and 21872 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:19,809 INFO L93 Difference]: Finished difference Result 43053 states and 54026 transitions. [2022-01-10 04:20:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2022-01-10 04:20:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:19,833 INFO L225 Difference]: With dead ends: 43053 [2022-01-10 04:20:19,833 INFO L226 Difference]: Without dead ends: 25511 [2022-01-10 04:20:19,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 282 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 04:20:19,846 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 112 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:19,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 223 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:20:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25511 states. [2022-01-10 04:20:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25511 to 25511. [2022-01-10 04:20:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25511 states, 25510 states have (on average 1.182281458251666) internal successors, (30160), 25510 states have internal predecessors, (30160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25511 states to 25511 states and 30160 transitions. [2022-01-10 04:20:20,093 INFO L78 Accepts]: Start accepts. Automaton has 25511 states and 30160 transitions. Word has length 284 [2022-01-10 04:20:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:20,094 INFO L470 AbstractCegarLoop]: Abstraction has 25511 states and 30160 transitions. [2022-01-10 04:20:20,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 25511 states and 30160 transitions. [2022-01-10 04:20:20,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-01-10 04:20:20,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:20,110 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:20:20,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 04:20:20,311 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 04:20:20,312 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash 727984589, now seen corresponding path program 1 times [2022-01-10 04:20:20,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:20,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006602533] [2022-01-10 04:20:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:20,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:20,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:20,318 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 04:20:20,318 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 04:20:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:20,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:20:20,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 04:20:21,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:21,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:21,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006602533] [2022-01-10 04:20:21,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006602533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:21,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:21,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:21,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304282669] [2022-01-10 04:20:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:21,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:20:21,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:20:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:20:21,451 INFO L87 Difference]: Start difference. First operand 25511 states and 30160 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:23,285 INFO L93 Difference]: Finished difference Result 97997 states and 116136 transitions. [2022-01-10 04:20:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:20:23,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-01-10 04:20:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:23,459 INFO L225 Difference]: With dead ends: 97997 [2022-01-10 04:20:23,459 INFO L226 Difference]: Without dead ends: 72741 [2022-01-10 04:20:23,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:20:23,474 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 580 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:23,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 92 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 04:20:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72741 states. [2022-01-10 04:20:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72741 to 72733. [2022-01-10 04:20:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72733 states, 72732 states have (on average 1.1841967772094815) internal successors, (86129), 72732 states have internal predecessors, (86129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72733 states to 72733 states and 86129 transitions. [2022-01-10 04:20:24,338 INFO L78 Accepts]: Start accepts. Automaton has 72733 states and 86129 transitions. Word has length 320 [2022-01-10 04:20:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:24,338 INFO L470 AbstractCegarLoop]: Abstraction has 72733 states and 86129 transitions. [2022-01-10 04:20:24,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 72733 states and 86129 transitions. [2022-01-10 04:20:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-01-10 04:20:24,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:24,361 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:24,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 04:20:24,567 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 04:20:24,568 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1594964757, now seen corresponding path program 1 times [2022-01-10 04:20:24,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:24,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761663161] [2022-01-10 04:20:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:24,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:24,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:24,572 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 04:20:24,573 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 04:20:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:24,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:20:24,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 04:20:25,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:25,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761663161] [2022-01-10 04:20:25,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761663161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:25,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:25,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:20:25,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927424438] [2022-01-10 04:20:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:25,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:25,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:25,660 INFO L87 Difference]: Start difference. First operand 72733 states and 86129 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:27,086 INFO L93 Difference]: Finished difference Result 160060 states and 189939 transitions. [2022-01-10 04:20:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:27,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-01-10 04:20:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:27,184 INFO L225 Difference]: With dead ends: 160060 [2022-01-10 04:20:27,185 INFO L226 Difference]: Without dead ends: 87582 [2022-01-10 04:20:27,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 318 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 04:20:27,225 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:27,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 241 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 04:20:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87582 states. [2022-01-10 04:20:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87582 to 87552. [2022-01-10 04:20:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87552 states, 87551 states have (on average 1.1702778951696726) internal successors, (102459), 87551 states have internal predecessors, (102459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87552 states to 87552 states and 102459 transitions. [2022-01-10 04:20:28,822 INFO L78 Accepts]: Start accepts. Automaton has 87552 states and 102459 transitions. Word has length 320 [2022-01-10 04:20:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:28,822 INFO L470 AbstractCegarLoop]: Abstraction has 87552 states and 102459 transitions. [2022-01-10 04:20:28,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 87552 states and 102459 transitions. [2022-01-10 04:20:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-01-10 04:20:28,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:28,847 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:20:28,858 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 04:20:29,055 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 04:20:29,057 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1833787224, now seen corresponding path program 1 times [2022-01-10 04:20:29,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:29,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366539479] [2022-01-10 04:20:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:29,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:29,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:29,062 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 04:20:29,063 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 04:20:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:29,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:20:29,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-01-10 04:20:29,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:29,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:29,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366539479] [2022-01-10 04:20:29,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366539479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:29,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:29,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:29,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149121882] [2022-01-10 04:20:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:29,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:29,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:29,718 INFO L87 Difference]: Start difference. First operand 87552 states and 102459 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:30,979 INFO L93 Difference]: Finished difference Result 193561 states and 226095 transitions. [2022-01-10 04:20:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2022-01-10 04:20:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:31,220 INFO L225 Difference]: With dead ends: 193561 [2022-01-10 04:20:31,220 INFO L226 Difference]: Without dead ends: 106264 [2022-01-10 04:20:31,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 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 04:20:31,245 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 199 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:31,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 278 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:20:31,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106264 states. [2022-01-10 04:20:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106264 to 104234. [2022-01-10 04:20:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104234 states, 104233 states have (on average 1.1567257970124625) internal successors, (120569), 104233 states have internal predecessors, (120569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104234 states to 104234 states and 120569 transitions. [2022-01-10 04:20:32,658 INFO L78 Accepts]: Start accepts. Automaton has 104234 states and 120569 transitions. Word has length 332 [2022-01-10 04:20:32,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:32,659 INFO L470 AbstractCegarLoop]: Abstraction has 104234 states and 120569 transitions. [2022-01-10 04:20:32,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 104234 states and 120569 transitions. [2022-01-10 04:20:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-01-10 04:20:32,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:32,676 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 04:20:32,683 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 04:20:32,882 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 04:20:32,883 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:32,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1218564796, now seen corresponding path program 1 times [2022-01-10 04:20:32,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:32,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284942586] [2022-01-10 04:20:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:32,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:32,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:32,887 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 04:20:32,889 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 04:20:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:33,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:20:33,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-01-10 04:20:33,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:33,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:33,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284942586] [2022-01-10 04:20:33,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284942586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:33,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:33,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:20:33,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729439315] [2022-01-10 04:20:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:33,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:33,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:33,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:33,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:33,475 INFO L87 Difference]: Start difference. First operand 104234 states and 120569 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:34,876 INFO L93 Difference]: Finished difference Result 217555 states and 250909 transitions. [2022-01-10 04:20:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:34,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2022-01-10 04:20:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:35,061 INFO L225 Difference]: With dead ends: 217555 [2022-01-10 04:20:35,061 INFO L226 Difference]: Without dead ends: 113576 [2022-01-10 04:20:35,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 343 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 04:20:35,161 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 186 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:35,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 221 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 04:20:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113576 states. [2022-01-10 04:20:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113576 to 113572. [2022-01-10 04:20:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113572 states, 113571 states have (on average 1.1495099981509365) internal successors, (130551), 113571 states have internal predecessors, (130551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113572 states to 113572 states and 130551 transitions. [2022-01-10 04:20:36,864 INFO L78 Accepts]: Start accepts. Automaton has 113572 states and 130551 transitions. Word has length 345 [2022-01-10 04:20:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:20:36,864 INFO L470 AbstractCegarLoop]: Abstraction has 113572 states and 130551 transitions. [2022-01-10 04:20:36,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 113572 states and 130551 transitions. [2022-01-10 04:20:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-01-10 04:20:36,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:20:36,907 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:36,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 04:20:37,107 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 04:20:37,108 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:20:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:20:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1270740870, now seen corresponding path program 1 times [2022-01-10 04:20:37,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:20:37,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609661763] [2022-01-10 04:20:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:20:37,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:20:37,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:20:37,111 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 04:20:37,112 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 04:20:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:20:37,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:20:37,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:20:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 04:20:37,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:20:37,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:20:37,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609661763] [2022-01-10 04:20:37,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609661763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:20:37,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:20:37,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:20:37,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751288079] [2022-01-10 04:20:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:20:37,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:20:37,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:20:37,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:20:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:20:37,700 INFO L87 Difference]: Start difference. First operand 113572 states and 130551 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:20:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:20:39,573 INFO L93 Difference]: Finished difference Result 273802 states and 312918 transitions. [2022-01-10 04:20:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:20:39,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2022-01-10 04:20:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:20:39,749 INFO L225 Difference]: With dead ends: 273802 [2022-01-10 04:20:39,749 INFO L226 Difference]: Without dead ends: 160485 [2022-01-10 04:20:39,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 345 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 04:20:39,796 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 222 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:20:39,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 258 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 04:20:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160485 states. [2022-01-10 04:20:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160485 to 157623. [2022-01-10 04:20:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157623 states, 157622 states have (on average 1.1077578003070638) internal successors, (174607), 157622 states have internal predecessors, (174607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)