/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:12:44,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:12:44,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:12:44,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:12:44,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:12:44,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:12:44,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:12:44,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:12:44,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:12:44,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:12:44,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:12:44,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:12:44,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:12:44,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:12:44,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:12:44,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:12:44,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:12:44,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:12:44,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:12:44,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:12:44,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:12:44,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:12:44,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:12:44,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:12:44,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:12:44,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:12:44,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:12:44,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:12:44,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:12:44,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:12:44,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:12:44,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:12:44,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:12:44,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:12:44,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:12:44,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:12:44,719 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 07:12:44,743 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:12:44,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:12:44,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:12:44,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:12:44,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:12:44,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:12:44,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:12:44,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:12:44,746 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:12:44,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:12:44,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:12:44,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:12:44,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:12:44,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:12:44,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:12:44,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:12:44,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:12:44,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:12:44,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:12:44,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:12:44,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:12:44,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:12:44,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:12:44,969 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:12:44,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 07:12:45,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3715fc811/79b0c91c872d44049ff3ca31110a5499/FLAG1af56e932 [2022-01-10 07:12:45,359 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:12:45,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 07:12:45,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3715fc811/79b0c91c872d44049ff3ca31110a5499/FLAG1af56e932 [2022-01-10 07:12:45,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3715fc811/79b0c91c872d44049ff3ca31110a5499 [2022-01-10 07:12:45,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:12:45,754 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:12:45,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:12:45,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:12:45,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:12:45,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:45" (1/1) ... [2022-01-10 07:12:45,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5690cadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:45, skipping insertion in model container [2022-01-10 07:12:45,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:45" (1/1) ... [2022-01-10 07:12:45,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:12:45,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:12:46,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2022-01-10 07:12:46,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:12:46,140 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:12:46,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2022-01-10 07:12:46,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:12:46,229 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:12:46,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46 WrapperNode [2022-01-10 07:12:46,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:12:46,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:12:46,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:12:46,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:12:46,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,299 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 938 [2022-01-10 07:12:46,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:12:46,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:12:46,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:12:46,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:12:46,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:12:46,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:12:46,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:12:46,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:12:46,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 07:12:46,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:12:46,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:12:46,382 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 07:12:46,391 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 07:12:46,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:12:46,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:12:46,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:12:46,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:12:46,520 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:12:46,520 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:12:47,087 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:12:47,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:12:47,098 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:12:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:47 BoogieIcfgContainer [2022-01-10 07:12:47,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:12:47,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:12:47,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:12:47,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:12:47,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:12:45" (1/3) ... [2022-01-10 07:12:47,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77537701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:47, skipping insertion in model container [2022-01-10 07:12:47,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (2/3) ... [2022-01-10 07:12:47,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77537701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:47, skipping insertion in model container [2022-01-10 07:12:47,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:47" (3/3) ... [2022-01-10 07:12:47,107 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-01-10 07:12:47,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:12:47,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:12:47,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:12:47,153 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 07:12:47,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:12:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 257 states have (on average 1.7237354085603114) internal successors, (443), 258 states have internal predecessors, (443), 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 07:12:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 07:12:47,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:47,171 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] [2022-01-10 07:12:47,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash 891906329, now seen corresponding path program 1 times [2022-01-10 07:12:47,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:47,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720401745] [2022-01-10 07:12:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:47,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:47,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:47,184 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 07:12:47,188 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 07:12:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:47,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:12:47,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:49,805 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 07:12:49,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:49,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:49,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720401745] [2022-01-10 07:12:49,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720401745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:49,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:49,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:49,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321928415] [2022-01-10 07:12:49,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:49,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:12:49,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:49,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:12:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:12:49,829 INFO L87 Difference]: Start difference. First operand has 259 states, 257 states have (on average 1.7237354085603114) internal successors, (443), 258 states have internal predecessors, (443), 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 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 07:12:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:49,999 INFO L93 Difference]: Finished difference Result 565 states and 926 transitions. [2022-01-10 07:12:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:12:50,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 97 [2022-01-10 07:12:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:50,010 INFO L225 Difference]: With dead ends: 565 [2022-01-10 07:12:50,010 INFO L226 Difference]: Without dead ends: 385 [2022-01-10 07:12:50,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:12:50,015 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 381 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:50,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1396 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 122 Unchecked, 0.1s Time] [2022-01-10 07:12:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-10 07:12:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 287. [2022-01-10 07:12:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.4405594405594406) internal successors, (412), 286 states have internal predecessors, (412), 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 07:12:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 412 transitions. [2022-01-10 07:12:50,050 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 412 transitions. Word has length 97 [2022-01-10 07:12:50,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:50,051 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 412 transitions. [2022-01-10 07:12:50,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 07:12:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 412 transitions. [2022-01-10 07:12:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:50,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:50,053 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] [2022-01-10 07:12:50,077 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 07:12:50,278 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 07:12:50,278 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1773262517, now seen corresponding path program 1 times [2022-01-10 07:12:50,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:50,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217090769] [2022-01-10 07:12:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:50,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:50,282 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 07:12:50,284 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 07:12:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:50,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:50,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:50,734 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 07:12:50,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:50,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217090769] [2022-01-10 07:12:50,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217090769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:50,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:50,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:50,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861755388] [2022-01-10 07:12:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:50,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:50,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:50,737 INFO L87 Difference]: Start difference. First operand 287 states and 412 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:50,876 INFO L93 Difference]: Finished difference Result 477 states and 710 transitions. [2022-01-10 07:12:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:50,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:50,877 INFO L225 Difference]: With dead ends: 477 [2022-01-10 07:12:50,877 INFO L226 Difference]: Without dead ends: 304 [2022-01-10 07:12:50,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:50,879 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 63 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:50,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 585 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-01-10 07:12:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-01-10 07:12:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2022-01-10 07:12:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4395973154362416) internal successors, (429), 298 states have internal predecessors, (429), 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 07:12:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 429 transitions. [2022-01-10 07:12:50,889 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 429 transitions. Word has length 98 [2022-01-10 07:12:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:50,890 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 429 transitions. [2022-01-10 07:12:50,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 429 transitions. [2022-01-10 07:12:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:50,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:50,892 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] [2022-01-10 07:12:50,913 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 07:12:51,100 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 07:12:51,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:51,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1202221348, now seen corresponding path program 1 times [2022-01-10 07:12:51,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:51,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874631522] [2022-01-10 07:12:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:51,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:51,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:51,103 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 07:12:51,105 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 07:12:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:51,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:51,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:51,533 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 07:12:51,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:51,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:51,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874631522] [2022-01-10 07:12:51,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874631522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:51,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:51,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:51,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031435174] [2022-01-10 07:12:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:51,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:51,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:51,535 INFO L87 Difference]: Start difference. First operand 299 states and 429 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:51,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:51,557 INFO L93 Difference]: Finished difference Result 473 states and 705 transitions. [2022-01-10 07:12:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:51,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:51,559 INFO L225 Difference]: With dead ends: 473 [2022-01-10 07:12:51,559 INFO L226 Difference]: Without dead ends: 310 [2022-01-10 07:12:51,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:51,560 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 54 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:51,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 763 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 152 Unchecked, 0.0s Time] [2022-01-10 07:12:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-01-10 07:12:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2022-01-10 07:12:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.438943894389439) internal successors, (436), 303 states have internal predecessors, (436), 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 07:12:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 436 transitions. [2022-01-10 07:12:51,568 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 436 transitions. Word has length 98 [2022-01-10 07:12:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:51,568 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 436 transitions. [2022-01-10 07:12:51,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 436 transitions. [2022-01-10 07:12:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:51,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:51,569 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] [2022-01-10 07:12:51,596 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 07:12:51,777 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 07:12:51,777 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:51,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:51,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1767103021, now seen corresponding path program 1 times [2022-01-10 07:12:51,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:51,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567069847] [2022-01-10 07:12:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:51,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:51,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:51,779 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 07:12:51,783 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 07:12:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:51,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:51,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:52,218 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 07:12:52,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:52,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:52,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567069847] [2022-01-10 07:12:52,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567069847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:52,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:52,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:52,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521427904] [2022-01-10 07:12:52,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:52,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:52,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:52,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:52,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:52,223 INFO L87 Difference]: Start difference. First operand 304 states and 436 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:52,346 INFO L93 Difference]: Finished difference Result 468 states and 697 transitions. [2022-01-10 07:12:52,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:52,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:52,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:52,348 INFO L225 Difference]: With dead ends: 468 [2022-01-10 07:12:52,348 INFO L226 Difference]: Without dead ends: 315 [2022-01-10 07:12:52,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:52,355 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 41 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:52,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 930 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 150 Unchecked, 0.1s Time] [2022-01-10 07:12:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-01-10 07:12:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 309. [2022-01-10 07:12:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.4350649350649352) internal successors, (442), 308 states have internal predecessors, (442), 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 07:12:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 442 transitions. [2022-01-10 07:12:52,364 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 442 transitions. Word has length 98 [2022-01-10 07:12:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:52,365 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 442 transitions. [2022-01-10 07:12:52,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 442 transitions. [2022-01-10 07:12:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:52,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:52,366 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] [2022-01-10 07:12:52,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 07:12:52,573 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 07:12:52,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:52,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1742875002, now seen corresponding path program 1 times [2022-01-10 07:12:52,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742538557] [2022-01-10 07:12:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:52,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:52,577 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 07:12:52,578 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 07:12:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:52,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:52,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:53,046 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 07:12:53,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:53,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742538557] [2022-01-10 07:12:53,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742538557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:53,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:53,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:53,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547399841] [2022-01-10 07:12:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:53,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:53,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:53,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:53,048 INFO L87 Difference]: Start difference. First operand 309 states and 442 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:53,164 INFO L93 Difference]: Finished difference Result 495 states and 732 transitions. [2022-01-10 07:12:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:53,166 INFO L225 Difference]: With dead ends: 495 [2022-01-10 07:12:53,166 INFO L226 Difference]: Without dead ends: 312 [2022-01-10 07:12:53,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:53,167 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 63 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:53,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 578 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-01-10 07:12:53,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-01-10 07:12:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 310. [2022-01-10 07:12:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.4336569579288025) internal successors, (443), 309 states have internal predecessors, (443), 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 07:12:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 443 transitions. [2022-01-10 07:12:53,173 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 443 transitions. Word has length 98 [2022-01-10 07:12:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:53,173 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 443 transitions. [2022-01-10 07:12:53,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 443 transitions. [2022-01-10 07:12:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:53,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:53,174 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] [2022-01-10 07:12:53,197 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 07:12:53,382 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 07:12:53,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1070468969, now seen corresponding path program 1 times [2022-01-10 07:12:53,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:53,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373474608] [2022-01-10 07:12:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:53,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:53,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:53,398 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 07:12:53,444 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 07:12:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:53,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:53,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:53,862 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 07:12:53,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:53,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:53,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373474608] [2022-01-10 07:12:53,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373474608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:53,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:53,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:53,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40196786] [2022-01-10 07:12:53,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:53,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:53,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:53,864 INFO L87 Difference]: Start difference. First operand 310 states and 443 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:53,988 INFO L93 Difference]: Finished difference Result 504 states and 743 transitions. [2022-01-10 07:12:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:53,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:53,990 INFO L225 Difference]: With dead ends: 504 [2022-01-10 07:12:53,990 INFO L226 Difference]: Without dead ends: 311 [2022-01-10 07:12:53,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:53,991 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 63 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:53,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 571 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-01-10 07:12:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-01-10 07:12:53,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2022-01-10 07:12:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.4322580645161291) internal successors, (444), 310 states have internal predecessors, (444), 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 07:12:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 444 transitions. [2022-01-10 07:12:53,999 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 444 transitions. Word has length 98 [2022-01-10 07:12:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:53,999 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 444 transitions. [2022-01-10 07:12:53,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 444 transitions. [2022-01-10 07:12:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 07:12:54,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:54,000 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] [2022-01-10 07:12:54,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 07:12:54,208 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 07:12:54,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash 786193176, now seen corresponding path program 1 times [2022-01-10 07:12:54,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:54,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128418803] [2022-01-10 07:12:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:54,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:54,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:54,211 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 07:12:54,212 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 07:12:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:54,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:12:54,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:54,626 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 07:12:54,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:54,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:54,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128418803] [2022-01-10 07:12:54,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128418803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:54,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:54,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:12:54,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667784519] [2022-01-10 07:12:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:54,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:12:54,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:12:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:12:54,628 INFO L87 Difference]: Start difference. First operand 311 states and 444 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:54,736 INFO L93 Difference]: Finished difference Result 514 states and 756 transitions. [2022-01-10 07:12:54,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:12:54,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-01-10 07:12:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:54,738 INFO L225 Difference]: With dead ends: 514 [2022-01-10 07:12:54,738 INFO L226 Difference]: Without dead ends: 311 [2022-01-10 07:12:54,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:12:54,739 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 64 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:54,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 564 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 07:12:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-01-10 07:12:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2022-01-10 07:12:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.429032258064516) internal successors, (443), 310 states have internal predecessors, (443), 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 07:12:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 443 transitions. [2022-01-10 07:12:54,745 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 443 transitions. Word has length 98 [2022-01-10 07:12:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:54,745 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 443 transitions. [2022-01-10 07:12:54,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 07:12:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 443 transitions. [2022-01-10 07:12:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:54,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:54,746 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] [2022-01-10 07:12:54,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:54,953 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 07:12:54,954 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1718062853, now seen corresponding path program 1 times [2022-01-10 07:12:54,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:54,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342293579] [2022-01-10 07:12:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:54,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:54,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:54,957 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 07:12:54,958 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 07:12:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:55,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:55,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:55,933 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 07:12:55,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:55,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:55,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342293579] [2022-01-10 07:12:55,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342293579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:55,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:55,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:55,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381950967] [2022-01-10 07:12:55,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:55,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:55,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:55,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:55,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:55,935 INFO L87 Difference]: Start difference. First operand 311 states and 443 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:56,028 INFO L93 Difference]: Finished difference Result 470 states and 686 transitions. [2022-01-10 07:12:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:56,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:56,030 INFO L225 Difference]: With dead ends: 470 [2022-01-10 07:12:56,030 INFO L226 Difference]: Without dead ends: 352 [2022-01-10 07:12:56,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:56,031 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 95 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:56,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1048 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 217 Unchecked, 0.1s Time] [2022-01-10 07:12:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-01-10 07:12:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 349. [2022-01-10 07:12:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4137931034482758) internal successors, (492), 348 states have internal predecessors, (492), 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 07:12:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 492 transitions. [2022-01-10 07:12:56,038 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 492 transitions. Word has length 99 [2022-01-10 07:12:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:56,038 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 492 transitions. [2022-01-10 07:12:56,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 492 transitions. [2022-01-10 07:12:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:56,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:56,039 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] [2022-01-10 07:12:56,046 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 07:12:56,246 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 07:12:56,246 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:56,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:56,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1265699035, now seen corresponding path program 1 times [2022-01-10 07:12:56,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:56,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394355723] [2022-01-10 07:12:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:56,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:56,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:56,249 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 07:12:56,250 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 07:12:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:56,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:56,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:57,097 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 07:12:57,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:57,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:57,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394355723] [2022-01-10 07:12:57,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394355723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:57,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:57,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:57,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184108529] [2022-01-10 07:12:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:57,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:57,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:57,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:57,099 INFO L87 Difference]: Start difference. First operand 349 states and 492 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:57,259 INFO L93 Difference]: Finished difference Result 525 states and 770 transitions. [2022-01-10 07:12:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:57,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:57,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:57,261 INFO L225 Difference]: With dead ends: 525 [2022-01-10 07:12:57,261 INFO L226 Difference]: Without dead ends: 408 [2022-01-10 07:12:57,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:57,262 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 118 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 557 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:57,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1730 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 557 Unchecked, 0.1s Time] [2022-01-10 07:12:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-10 07:12:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 399. [2022-01-10 07:12:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.4246231155778895) internal successors, (567), 398 states have internal predecessors, (567), 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 07:12:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 567 transitions. [2022-01-10 07:12:57,270 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 567 transitions. Word has length 99 [2022-01-10 07:12:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:57,271 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 567 transitions. [2022-01-10 07:12:57,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 567 transitions. [2022-01-10 07:12:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:57,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:57,272 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] [2022-01-10 07:12:57,293 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 07:12:57,479 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 07:12:57,480 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash -958523579, now seen corresponding path program 1 times [2022-01-10 07:12:57,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:57,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027879472] [2022-01-10 07:12:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:57,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:57,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:57,482 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 07:12:57,511 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 07:12:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:57,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:57,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:58,091 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 07:12:58,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:58,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027879472] [2022-01-10 07:12:58,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027879472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:58,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:58,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:58,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699752869] [2022-01-10 07:12:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:58,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:58,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:58,093 INFO L87 Difference]: Start difference. First operand 399 states and 567 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:58,200 INFO L93 Difference]: Finished difference Result 554 states and 812 transitions. [2022-01-10 07:12:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:58,202 INFO L225 Difference]: With dead ends: 554 [2022-01-10 07:12:58,202 INFO L226 Difference]: Without dead ends: 412 [2022-01-10 07:12:58,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:58,203 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 64 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:58,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 886 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-01-10 07:12:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-10 07:12:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 408. [2022-01-10 07:12:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.4152334152334152) internal successors, (576), 407 states have internal predecessors, (576), 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 07:12:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 576 transitions. [2022-01-10 07:12:58,214 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 576 transitions. Word has length 99 [2022-01-10 07:12:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:58,215 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 576 transitions. [2022-01-10 07:12:58,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 576 transitions. [2022-01-10 07:12:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:58,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:58,216 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] [2022-01-10 07:12:58,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 07:12:58,422 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 07:12:58,423 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1808277787, now seen corresponding path program 1 times [2022-01-10 07:12:58,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:58,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492513876] [2022-01-10 07:12:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:58,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:58,425 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 07:12:58,426 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 07:12:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:58,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:58,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:12:59,283 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 07:12:59,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:12:59,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:12:59,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492513876] [2022-01-10 07:12:59,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492513876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:12:59,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:12:59,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:12:59,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868395824] [2022-01-10 07:12:59,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:12:59,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:12:59,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:12:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:12:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:12:59,296 INFO L87 Difference]: Start difference. First operand 408 states and 576 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:59,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:12:59,424 INFO L93 Difference]: Finished difference Result 569 states and 827 transitions. [2022-01-10 07:12:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:12:59,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:12:59,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:12:59,425 INFO L225 Difference]: With dead ends: 569 [2022-01-10 07:12:59,426 INFO L226 Difference]: Without dead ends: 445 [2022-01-10 07:12:59,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:12:59,426 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 61 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 732 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:12:59,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 1907 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 732 Unchecked, 0.1s Time] [2022-01-10 07:12:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-01-10 07:12:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 438. [2022-01-10 07:12:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.4073226544622426) internal successors, (615), 437 states have internal predecessors, (615), 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 07:12:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 615 transitions. [2022-01-10 07:12:59,435 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 615 transitions. Word has length 99 [2022-01-10 07:12:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:12:59,435 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 615 transitions. [2022-01-10 07:12:59,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:12:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 615 transitions. [2022-01-10 07:12:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:12:59,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:12:59,436 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] [2022-01-10 07:12:59,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:12:59,644 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 07:12:59,644 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:12:59,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:12:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2010113733, now seen corresponding path program 1 times [2022-01-10 07:12:59,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:12:59,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233350848] [2022-01-10 07:12:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:12:59,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:12:59,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:12:59,647 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 07:12:59,649 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 07:12:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:12:59,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:12:59,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:00,505 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 07:13:00,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:00,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:00,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233350848] [2022-01-10 07:13:00,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233350848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:00,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:00,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:13:00,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159910942] [2022-01-10 07:13:00,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:00,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:13:00,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:00,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:13:00,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:13:00,506 INFO L87 Difference]: Start difference. First operand 438 states and 615 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:13:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:00,701 INFO L93 Difference]: Finished difference Result 762 states and 1121 transitions. [2022-01-10 07:13:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:00,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:13:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:00,704 INFO L225 Difference]: With dead ends: 762 [2022-01-10 07:13:00,704 INFO L226 Difference]: Without dead ends: 632 [2022-01-10 07:13:00,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:00,704 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 336 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1464 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:00,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 2802 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 268 Invalid, 0 Unknown, 1464 Unchecked, 0.2s Time] [2022-01-10 07:13:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-01-10 07:13:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 499. [2022-01-10 07:13:00,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.4056224899598393) internal successors, (700), 498 states have internal predecessors, (700), 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 07:13:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 700 transitions. [2022-01-10 07:13:00,716 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 700 transitions. Word has length 99 [2022-01-10 07:13:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:00,716 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 700 transitions. [2022-01-10 07:13:00,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:13:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 700 transitions. [2022-01-10 07:13:00,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 07:13:00,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:00,718 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] [2022-01-10 07:13:00,739 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 07:13:00,925 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 07:13:00,925 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash -855660891, now seen corresponding path program 1 times [2022-01-10 07:13:00,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:00,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772177427] [2022-01-10 07:13:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:00,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:00,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:00,932 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 07:13:00,952 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 07:13:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:01,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:13:01,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:01,737 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 07:13:01,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:01,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:01,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772177427] [2022-01-10 07:13:01,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772177427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:01,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:01,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:13:01,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695335111] [2022-01-10 07:13:01,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:01,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:13:01,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:13:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:13:01,739 INFO L87 Difference]: Start difference. First operand 499 states and 700 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:13:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:01,941 INFO L93 Difference]: Finished difference Result 670 states and 971 transitions. [2022-01-10 07:13:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:01,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 99 [2022-01-10 07:13:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:01,943 INFO L225 Difference]: With dead ends: 670 [2022-01-10 07:13:01,943 INFO L226 Difference]: Without dead ends: 534 [2022-01-10 07:13:01,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:01,944 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 70 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 596 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:01,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1793 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 596 Unchecked, 0.1s Time] [2022-01-10 07:13:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-01-10 07:13:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 525. [2022-01-10 07:13:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.4026717557251909) internal successors, (735), 524 states have internal predecessors, (735), 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 07:13:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 735 transitions. [2022-01-10 07:13:01,954 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 735 transitions. Word has length 99 [2022-01-10 07:13:01,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:01,954 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 735 transitions. [2022-01-10 07:13:01,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 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 07:13:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 735 transitions. [2022-01-10 07:13:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:13:01,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:01,955 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] [2022-01-10 07:13:01,971 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 07:13:02,162 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 07:13:02,163 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:02,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1361172880, now seen corresponding path program 1 times [2022-01-10 07:13:02,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:02,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852880087] [2022-01-10 07:13:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:02,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:02,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:02,165 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 07:13:02,172 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 07:13:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:02,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:02,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:02,538 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 07:13:02,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:02,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:02,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852880087] [2022-01-10 07:13:02,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852880087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:02,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:02,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:02,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96589878] [2022-01-10 07:13:02,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:02,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:02,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:02,539 INFO L87 Difference]: Start difference. First operand 525 states and 735 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:13:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:02,639 INFO L93 Difference]: Finished difference Result 691 states and 997 transitions. [2022-01-10 07:13:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:02,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 100 [2022-01-10 07:13:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:02,641 INFO L225 Difference]: With dead ends: 691 [2022-01-10 07:13:02,641 INFO L226 Difference]: Without dead ends: 528 [2022-01-10 07:13:02,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:02,644 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 42 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:02,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 918 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2022-01-10 07:13:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-01-10 07:13:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 525. [2022-01-10 07:13:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.400763358778626) internal successors, (734), 524 states have internal predecessors, (734), 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 07:13:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 734 transitions. [2022-01-10 07:13:02,671 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 734 transitions. Word has length 100 [2022-01-10 07:13:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:02,671 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 734 transitions. [2022-01-10 07:13:02,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:13:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 734 transitions. [2022-01-10 07:13:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:13:02,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:02,672 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] [2022-01-10 07:13:02,697 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 07:13:02,873 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 07:13:02,873 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1608151489, now seen corresponding path program 1 times [2022-01-10 07:13:02,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:02,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972195362] [2022-01-10 07:13:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:02,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:02,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:02,875 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 07:13:02,878 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 07:13:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:02,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:02,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:03,271 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 07:13:03,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:03,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:03,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972195362] [2022-01-10 07:13:03,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972195362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:03,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:03,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:03,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123384247] [2022-01-10 07:13:03,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:03,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:03,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:03,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:03,281 INFO L87 Difference]: Start difference. First operand 525 states and 734 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:13:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:03,434 INFO L93 Difference]: Finished difference Result 687 states and 992 transitions. [2022-01-10 07:13:03,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:03,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 100 [2022-01-10 07:13:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:03,437 INFO L225 Difference]: With dead ends: 687 [2022-01-10 07:13:03,437 INFO L226 Difference]: Without dead ends: 534 [2022-01-10 07:13:03,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:03,438 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 47 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:03,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 933 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 149 Unchecked, 0.1s Time] [2022-01-10 07:13:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-01-10 07:13:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 529. [2022-01-10 07:13:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.3996212121212122) internal successors, (739), 528 states have internal predecessors, (739), 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 07:13:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 739 transitions. [2022-01-10 07:13:03,452 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 739 transitions. Word has length 100 [2022-01-10 07:13:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:03,457 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 739 transitions. [2022-01-10 07:13:03,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 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 07:13:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 739 transitions. [2022-01-10 07:13:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:13:03,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:03,459 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] [2022-01-10 07:13:03,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:03,669 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 07:13:03,669 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:03,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash 21678154, now seen corresponding path program 1 times [2022-01-10 07:13:03,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:03,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390098512] [2022-01-10 07:13:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:03,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:03,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:03,676 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 07:13:03,679 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 07:13:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:03,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:13:03,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:03,958 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 07:13:03,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:03,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:03,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390098512] [2022-01-10 07:13:03,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390098512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:03,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:03,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:13:03,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180295474] [2022-01-10 07:13:03,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:03,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:13:03,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:13:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:03,960 INFO L87 Difference]: Start difference. First operand 529 states and 739 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 07:13:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:04,235 INFO L93 Difference]: Finished difference Result 1156 states and 1721 transitions. [2022-01-10 07:13:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:04,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 100 [2022-01-10 07:13:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:04,255 INFO L225 Difference]: With dead ends: 1156 [2022-01-10 07:13:04,255 INFO L226 Difference]: Without dead ends: 968 [2022-01-10 07:13:04,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:04,256 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1802 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:04,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 645 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:13:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-01-10 07:13:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 557. [2022-01-10 07:13:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.3723021582733812) internal successors, (763), 556 states have internal predecessors, (763), 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 07:13:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 763 transitions. [2022-01-10 07:13:04,272 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 763 transitions. Word has length 100 [2022-01-10 07:13:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:04,272 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 763 transitions. [2022-01-10 07:13:04,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 07:13:04,272 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 763 transitions. [2022-01-10 07:13:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:13:04,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:04,273 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] [2022-01-10 07:13:04,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:04,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:04,480 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 503051646, now seen corresponding path program 1 times [2022-01-10 07:13:04,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:04,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717996543] [2022-01-10 07:13:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:04,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:04,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:04,482 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:04,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:13:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:04,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:13:04,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:04,750 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 07:13:04,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:04,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717996543] [2022-01-10 07:13:04,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717996543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:04,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:04,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:13:04,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749210367] [2022-01-10 07:13:04,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:04,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:13:04,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:13:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:04,752 INFO L87 Difference]: Start difference. First operand 557 states and 763 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 07:13:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:05,156 INFO L93 Difference]: Finished difference Result 1523 states and 2261 transitions. [2022-01-10 07:13:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:05,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 100 [2022-01-10 07:13:05,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:05,161 INFO L225 Difference]: With dead ends: 1523 [2022-01-10 07:13:05,161 INFO L226 Difference]: Without dead ends: 1353 [2022-01-10 07:13:05,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:05,162 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 2775 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:05,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2775 Valid, 772 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:13:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-01-10 07:13:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 631. [2022-01-10 07:13:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 1.3523809523809525) internal successors, (852), 630 states have internal predecessors, (852), 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 07:13:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 852 transitions. [2022-01-10 07:13:05,180 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 852 transitions. Word has length 100 [2022-01-10 07:13:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:05,180 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 852 transitions. [2022-01-10 07:13:05,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 07:13:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 852 transitions. [2022-01-10 07:13:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 07:13:05,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:05,181 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] [2022-01-10 07:13:05,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 07:13:05,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:05,388 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1029801758, now seen corresponding path program 1 times [2022-01-10 07:13:05,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462389478] [2022-01-10 07:13:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:05,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:05,401 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:05,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:13:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:05,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:13:05,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:06,715 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 07:13:06,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:06,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:06,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462389478] [2022-01-10 07:13:06,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462389478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:06,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:06,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 07:13:06,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40431754] [2022-01-10 07:13:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:06,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:13:06,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:13:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:13:06,717 INFO L87 Difference]: Start difference. First operand 631 states and 852 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 07:13:06,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:06,890 INFO L93 Difference]: Finished difference Result 1579 states and 2323 transitions. [2022-01-10 07:13:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:13:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 100 [2022-01-10 07:13:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:06,895 INFO L225 Difference]: With dead ends: 1579 [2022-01-10 07:13:06,895 INFO L226 Difference]: Without dead ends: 1462 [2022-01-10 07:13:06,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:13:06,896 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1840 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:06,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 1969 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:13:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-01-10 07:13:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 805. [2022-01-10 07:13:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 1.3917910447761195) internal successors, (1119), 804 states have internal predecessors, (1119), 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 07:13:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1119 transitions. [2022-01-10 07:13:06,925 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1119 transitions. Word has length 100 [2022-01-10 07:13:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:06,925 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1119 transitions. [2022-01-10 07:13:06,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 07:13:06,925 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1119 transitions. [2022-01-10 07:13:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 07:13:06,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:06,926 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] [2022-01-10 07:13:06,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:07,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:07,134 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1516394992, now seen corresponding path program 1 times [2022-01-10 07:13:07,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:07,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860775644] [2022-01-10 07:13:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:07,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:07,141 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:07,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:13:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:07,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:13:07,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:07,447 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 07:13:07,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:07,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:07,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860775644] [2022-01-10 07:13:07,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860775644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:07,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:07,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:07,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893293613] [2022-01-10 07:13:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:07,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:13:07,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:07,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:13:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:13:07,448 INFO L87 Difference]: Start difference. First operand 805 states and 1119 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 07:13:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:07,518 INFO L93 Difference]: Finished difference Result 1041 states and 1484 transitions. [2022-01-10 07:13:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:13:07,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 101 [2022-01-10 07:13:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:07,521 INFO L225 Difference]: With dead ends: 1041 [2022-01-10 07:13:07,521 INFO L226 Difference]: Without dead ends: 1039 [2022-01-10 07:13:07,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:07,522 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 352 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:07,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1115 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-01-10 07:13:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 809. [2022-01-10 07:13:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.3898514851485149) internal successors, (1123), 808 states have internal predecessors, (1123), 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 07:13:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1123 transitions. [2022-01-10 07:13:07,558 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1123 transitions. Word has length 101 [2022-01-10 07:13:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:07,559 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1123 transitions. [2022-01-10 07:13:07,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 07:13:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1123 transitions. [2022-01-10 07:13:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:07,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:07,560 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] [2022-01-10 07:13:07,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:07,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:07,786 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash 107836940, now seen corresponding path program 1 times [2022-01-10 07:13:07,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:07,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666986499] [2022-01-10 07:13:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:07,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:07,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:07,788 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:07,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:13:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:07,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:13:07,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:08,112 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 07:13:08,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:08,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:08,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666986499] [2022-01-10 07:13:08,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666986499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:08,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:08,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:08,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322313117] [2022-01-10 07:13:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:08,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:13:08,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:13:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:13:08,113 INFO L87 Difference]: Start difference. First operand 809 states and 1123 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:13:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:08,158 INFO L93 Difference]: Finished difference Result 1177 states and 1690 transitions. [2022-01-10 07:13:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:13:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:08,160 INFO L225 Difference]: With dead ends: 1177 [2022-01-10 07:13:08,160 INFO L226 Difference]: Without dead ends: 941 [2022-01-10 07:13:08,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:13:08,161 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 253 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:08,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1168 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-01-10 07:13:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-01-10 07:13:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 939. [2022-01-10 07:13:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 1.4093816631130065) internal successors, (1322), 938 states have internal predecessors, (1322), 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 07:13:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1322 transitions. [2022-01-10 07:13:08,202 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1322 transitions. Word has length 102 [2022-01-10 07:13:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:08,202 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1322 transitions. [2022-01-10 07:13:08,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 07:13:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1322 transitions. [2022-01-10 07:13:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:08,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:08,203 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] [2022-01-10 07:13:08,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:08,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:08,411 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1461679126, now seen corresponding path program 1 times [2022-01-10 07:13:08,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:08,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878771780] [2022-01-10 07:13:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:08,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:08,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:08,413 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:08,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:13:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:08,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:08,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:08,662 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 07:13:08,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:08,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:08,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878771780] [2022-01-10 07:13:08,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878771780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:08,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:08,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:08,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598263207] [2022-01-10 07:13:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:08,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:08,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:08,664 INFO L87 Difference]: Start difference. First operand 939 states and 1322 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:08,755 INFO L93 Difference]: Finished difference Result 1830 states and 2652 transitions. [2022-01-10 07:13:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:08,759 INFO L225 Difference]: With dead ends: 1830 [2022-01-10 07:13:08,759 INFO L226 Difference]: Without dead ends: 1458 [2022-01-10 07:13:08,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:08,760 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 216 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:08,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 728 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2022-01-10 07:13:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1456. [2022-01-10 07:13:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 1.4219931271477664) internal successors, (2069), 1455 states have internal predecessors, (2069), 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 07:13:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2069 transitions. [2022-01-10 07:13:08,827 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2069 transitions. Word has length 102 [2022-01-10 07:13:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:08,828 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 2069 transitions. [2022-01-10 07:13:08,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2069 transitions. [2022-01-10 07:13:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:08,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:08,829 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] [2022-01-10 07:13:08,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:09,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:09,036 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:09,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1915149815, now seen corresponding path program 1 times [2022-01-10 07:13:09,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:09,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996938460] [2022-01-10 07:13:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:09,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:09,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:09,038 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:09,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:13:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:09,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:13:09,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:09,369 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 07:13:09,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:09,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:09,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996938460] [2022-01-10 07:13:09,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996938460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:09,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:09,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:13:09,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058634785] [2022-01-10 07:13:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:09,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:13:09,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:13:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:09,371 INFO L87 Difference]: Start difference. First operand 1456 states and 2069 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 07:13:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:09,976 INFO L93 Difference]: Finished difference Result 5709 states and 8467 transitions. [2022-01-10 07:13:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:09,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:09,989 INFO L225 Difference]: With dead ends: 5709 [2022-01-10 07:13:09,990 INFO L226 Difference]: Without dead ends: 4942 [2022-01-10 07:13:09,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:09,992 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 2150 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:09,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2150 Valid, 736 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:13:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2022-01-10 07:13:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 1795. [2022-01-10 07:13:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 1.3929765886287626) internal successors, (2499), 1794 states have internal predecessors, (2499), 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 07:13:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2499 transitions. [2022-01-10 07:13:10,112 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2499 transitions. Word has length 102 [2022-01-10 07:13:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:10,112 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 2499 transitions. [2022-01-10 07:13:10,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 07:13:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2499 transitions. [2022-01-10 07:13:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:10,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:10,114 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] [2022-01-10 07:13:10,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:10,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:10,321 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:10,322 INFO L85 PathProgramCache]: Analyzing trace with hash 720932598, now seen corresponding path program 1 times [2022-01-10 07:13:10,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:10,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729639650] [2022-01-10 07:13:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:10,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:10,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:10,324 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:10,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:13:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:10,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:13:10,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:10,669 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 07:13:10,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:10,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:10,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729639650] [2022-01-10 07:13:10,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729639650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:10,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:10,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:13:10,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046928752] [2022-01-10 07:13:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:10,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:13:10,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:13:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:10,671 INFO L87 Difference]: Start difference. First operand 1795 states and 2499 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 07:13:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:11,409 INFO L93 Difference]: Finished difference Result 6661 states and 9756 transitions. [2022-01-10 07:13:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:11,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:11,423 INFO L225 Difference]: With dead ends: 6661 [2022-01-10 07:13:11,424 INFO L226 Difference]: Without dead ends: 5840 [2022-01-10 07:13:11,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:11,426 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 3564 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:11,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 754 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:13:11,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2022-01-10 07:13:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 2225. [2022-01-10 07:13:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2224 states have (on average 1.370953237410072) internal successors, (3049), 2224 states have internal predecessors, (3049), 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 07:13:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3049 transitions. [2022-01-10 07:13:11,570 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3049 transitions. Word has length 102 [2022-01-10 07:13:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:11,570 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 3049 transitions. [2022-01-10 07:13:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 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 07:13:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3049 transitions. [2022-01-10 07:13:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:11,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:11,573 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] [2022-01-10 07:13:11,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:11,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:11,781 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:11,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:11,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2137377695, now seen corresponding path program 1 times [2022-01-10 07:13:11,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:11,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993359624] [2022-01-10 07:13:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:11,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:11,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:11,783 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:11,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:13:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:11,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:12,029 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 07:13:12,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:12,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:12,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993359624] [2022-01-10 07:13:12,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993359624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:12,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:12,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:12,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381101247] [2022-01-10 07:13:12,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:12,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:12,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:12,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:12,031 INFO L87 Difference]: Start difference. First operand 2225 states and 3049 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:12,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:12,216 INFO L93 Difference]: Finished difference Result 4115 states and 5797 transitions. [2022-01-10 07:13:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:12,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:12,225 INFO L225 Difference]: With dead ends: 4115 [2022-01-10 07:13:12,225 INFO L226 Difference]: Without dead ends: 3438 [2022-01-10 07:13:12,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:12,226 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 204 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:12,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 707 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2022-01-10 07:13:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 3436. [2022-01-10 07:13:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3435 states have (on average 1.3883551673944687) internal successors, (4769), 3435 states have internal predecessors, (4769), 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 07:13:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 4769 transitions. [2022-01-10 07:13:12,401 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 4769 transitions. Word has length 102 [2022-01-10 07:13:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:12,401 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 4769 transitions. [2022-01-10 07:13:12,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 4769 transitions. [2022-01-10 07:13:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:12,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:12,405 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] [2022-01-10 07:13:12,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:12,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:12,612 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:12,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1327346070, now seen corresponding path program 1 times [2022-01-10 07:13:12,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:12,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853638788] [2022-01-10 07:13:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:12,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:12,614 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:12,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:13:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:12,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:12,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:12,845 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 07:13:12,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:12,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853638788] [2022-01-10 07:13:12,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853638788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:12,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:12,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:12,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59962532] [2022-01-10 07:13:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:12,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:12,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:12,847 INFO L87 Difference]: Start difference. First operand 3436 states and 4769 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:13,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:13,215 INFO L93 Difference]: Finished difference Result 7271 states and 10395 transitions. [2022-01-10 07:13:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:13,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:13,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:13,231 INFO L225 Difference]: With dead ends: 7271 [2022-01-10 07:13:13,231 INFO L226 Difference]: Without dead ends: 5143 [2022-01-10 07:13:13,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:13,234 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 263 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:13,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 700 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2022-01-10 07:13:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5141. [2022-01-10 07:13:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 1.4036964980544746) internal successors, (7215), 5140 states have internal predecessors, (7215), 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 07:13:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 7215 transitions. [2022-01-10 07:13:13,562 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 7215 transitions. Word has length 102 [2022-01-10 07:13:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:13,562 INFO L470 AbstractCegarLoop]: Abstraction has 5141 states and 7215 transitions. [2022-01-10 07:13:13,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 7215 transitions. [2022-01-10 07:13:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:13,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:13,571 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] [2022-01-10 07:13:13,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:13,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:13,788 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash -693763561, now seen corresponding path program 1 times [2022-01-10 07:13:13,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:13,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971392541] [2022-01-10 07:13:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:13,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:13,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:13,790 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:13,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:13:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:13,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:13,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:14,025 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 07:13:14,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:14,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:14,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971392541] [2022-01-10 07:13:14,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971392541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:14,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:14,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:14,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737703574] [2022-01-10 07:13:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:14,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:14,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:14,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:14,028 INFO L87 Difference]: Start difference. First operand 5141 states and 7215 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:14,620 INFO L93 Difference]: Finished difference Result 11834 states and 16856 transitions. [2022-01-10 07:13:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:14,658 INFO L225 Difference]: With dead ends: 11834 [2022-01-10 07:13:14,659 INFO L226 Difference]: Without dead ends: 9224 [2022-01-10 07:13:14,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:14,678 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 223 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:14,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 835 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2022-01-10 07:13:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 9222. [2022-01-10 07:13:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9222 states, 9221 states have (on average 1.3996312764342262) internal successors, (12906), 9221 states have internal predecessors, (12906), 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 07:13:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9222 states to 9222 states and 12906 transitions. [2022-01-10 07:13:15,365 INFO L78 Accepts]: Start accepts. Automaton has 9222 states and 12906 transitions. Word has length 102 [2022-01-10 07:13:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:15,365 INFO L470 AbstractCegarLoop]: Abstraction has 9222 states and 12906 transitions. [2022-01-10 07:13:15,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9222 states and 12906 transitions. [2022-01-10 07:13:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:15,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:15,400 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] [2022-01-10 07:13:15,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:15,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:15,607 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash -395043018, now seen corresponding path program 1 times [2022-01-10 07:13:15,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:15,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133491451] [2022-01-10 07:13:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:15,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:15,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:15,610 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:15,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:13:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:15,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:15,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:15,865 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 07:13:15,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:15,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133491451] [2022-01-10 07:13:15,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133491451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:15,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:15,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:15,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034734038] [2022-01-10 07:13:15,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:15,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:15,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:15,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:15,869 INFO L87 Difference]: Start difference. First operand 9222 states and 12906 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:16,968 INFO L93 Difference]: Finished difference Result 20614 states and 29350 transitions. [2022-01-10 07:13:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:16,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:17,022 INFO L225 Difference]: With dead ends: 20614 [2022-01-10 07:13:17,022 INFO L226 Difference]: Without dead ends: 15340 [2022-01-10 07:13:17,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:17,049 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 239 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:17,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 695 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15340 states. [2022-01-10 07:13:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15340 to 15338. [2022-01-10 07:13:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15338 states, 15337 states have (on average 1.3976657755754058) internal successors, (21436), 15337 states have internal predecessors, (21436), 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 07:13:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15338 states to 15338 states and 21436 transitions. [2022-01-10 07:13:18,272 INFO L78 Accepts]: Start accepts. Automaton has 15338 states and 21436 transitions. Word has length 102 [2022-01-10 07:13:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 15338 states and 21436 transitions. [2022-01-10 07:13:18,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 15338 states and 21436 transitions. [2022-01-10 07:13:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 07:13:18,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:18,286 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] [2022-01-10 07:13:18,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:18,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:18,495 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:18,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:18,495 INFO L85 PathProgramCache]: Analyzing trace with hash -172520585, now seen corresponding path program 1 times [2022-01-10 07:13:18,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:18,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046662810] [2022-01-10 07:13:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:18,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:18,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:18,497 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:18,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:13:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:18,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:18,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:18,754 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 07:13:18,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:18,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:18,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046662810] [2022-01-10 07:13:18,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046662810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:18,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:18,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:18,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269687683] [2022-01-10 07:13:18,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:18,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:18,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:18,755 INFO L87 Difference]: Start difference. First operand 15338 states and 21436 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:20,693 INFO L93 Difference]: Finished difference Result 35921 states and 51140 transitions. [2022-01-10 07:13:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:13:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2022-01-10 07:13:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:20,731 INFO L225 Difference]: With dead ends: 35921 [2022-01-10 07:13:20,731 INFO L226 Difference]: Without dead ends: 25231 [2022-01-10 07:13:20,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 07:13:20,743 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 252 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:20,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 695 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:13:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25231 states. [2022-01-10 07:13:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25231 to 25229. [2022-01-10 07:13:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25229 states, 25228 states have (on average 1.3978912319644838) internal successors, (35266), 25228 states have internal predecessors, (35266), 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 07:13:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25229 states to 25229 states and 35266 transitions. [2022-01-10 07:13:22,699 INFO L78 Accepts]: Start accepts. Automaton has 25229 states and 35266 transitions. Word has length 102 [2022-01-10 07:13:22,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:22,699 INFO L470 AbstractCegarLoop]: Abstraction has 25229 states and 35266 transitions. [2022-01-10 07:13:22,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:13:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25229 states and 35266 transitions. [2022-01-10 07:13:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:13:22,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:22,714 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] [2022-01-10 07:13:22,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:22,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:22,921 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash -484328347, now seen corresponding path program 1 times [2022-01-10 07:13:22,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:22,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032272445] [2022-01-10 07:13:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:22,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:22,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:22,923 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:22,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:13:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:23,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:13:23,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:23,386 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 07:13:23,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:23,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:23,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032272445] [2022-01-10 07:13:23,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032272445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:23,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:23,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:13:23,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761117407] [2022-01-10 07:13:23,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:23,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:13:23,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:23,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:13:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:13:23,388 INFO L87 Difference]: Start difference. First operand 25229 states and 35266 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 07:13:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:25,504 INFO L93 Difference]: Finished difference Result 26274 states and 36709 transitions. [2022-01-10 07:13:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:13:25,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-01-10 07:13:25,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:25,538 INFO L225 Difference]: With dead ends: 26274 [2022-01-10 07:13:25,538 INFO L226 Difference]: Without dead ends: 25230 [2022-01-10 07:13:25,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:25,545 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 59 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:25,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 753 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-01-10 07:13:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25230 states. [2022-01-10 07:13:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25230 to 25229. [2022-01-10 07:13:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25229 states, 25228 states have (on average 1.3978515934675757) internal successors, (35265), 25228 states have internal predecessors, (35265), 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 07:13:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25229 states to 25229 states and 35265 transitions. [2022-01-10 07:13:27,406 INFO L78 Accepts]: Start accepts. Automaton has 25229 states and 35265 transitions. Word has length 103 [2022-01-10 07:13:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:27,407 INFO L470 AbstractCegarLoop]: Abstraction has 25229 states and 35265 transitions. [2022-01-10 07:13:27,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 07:13:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 25229 states and 35265 transitions. [2022-01-10 07:13:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:13:27,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:27,421 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] [2022-01-10 07:13:27,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:27,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:27,628 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:27,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1497011603, now seen corresponding path program 1 times [2022-01-10 07:13:27,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:27,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320566095] [2022-01-10 07:13:27,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:27,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:27,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:27,630 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:27,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:13:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:27,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:13:27,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:27,968 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 07:13:27,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:27,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:27,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320566095] [2022-01-10 07:13:27,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320566095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:27,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:27,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:13:27,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983750420] [2022-01-10 07:13:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:27,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:13:27,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:27,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:13:27,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:27,970 INFO L87 Difference]: Start difference. First operand 25229 states and 35265 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 07:13:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:37,427 INFO L93 Difference]: Finished difference Result 111365 states and 158600 transitions. [2022-01-10 07:13:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 103 [2022-01-10 07:13:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:37,694 INFO L225 Difference]: With dead ends: 111365 [2022-01-10 07:13:37,694 INFO L226 Difference]: Without dead ends: 94975 [2022-01-10 07:13:37,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:37,748 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 1839 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:37,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 878 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:13:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94975 states. [2022-01-10 07:13:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94975 to 28765. [2022-01-10 07:13:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28765 states, 28764 states have (on average 1.37449589764984) internal successors, (39536), 28764 states have internal predecessors, (39536), 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 07:13:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28765 states to 28765 states and 39536 transitions. [2022-01-10 07:13:40,641 INFO L78 Accepts]: Start accepts. Automaton has 28765 states and 39536 transitions. Word has length 103 [2022-01-10 07:13:40,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:40,642 INFO L470 AbstractCegarLoop]: Abstraction has 28765 states and 39536 transitions. [2022-01-10 07:13:40,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 07:13:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 28765 states and 39536 transitions. [2022-01-10 07:13:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:13:40,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:40,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:13:40,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:40,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:40,865 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash -896926372, now seen corresponding path program 1 times [2022-01-10 07:13:40,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:40,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44163240] [2022-01-10 07:13:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:40,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:40,867 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:40,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:13:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:40,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:13:40,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:41,240 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 07:13:41,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:41,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:41,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44163240] [2022-01-10 07:13:41,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44163240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:41,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:41,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:13:41,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118112998] [2022-01-10 07:13:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:41,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:13:41,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:41,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:13:41,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:13:41,242 INFO L87 Difference]: Start difference. First operand 28765 states and 39536 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 07:13:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:13:50,408 INFO L93 Difference]: Finished difference Result 98951 states and 138232 transitions. [2022-01-10 07:13:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:13:50,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 103 [2022-01-10 07:13:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:13:50,534 INFO L225 Difference]: With dead ends: 98951 [2022-01-10 07:13:50,534 INFO L226 Difference]: Without dead ends: 83077 [2022-01-10 07:13:50,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:13:50,569 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 2077 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:13:50,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2077 Valid, 712 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:13:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83077 states. [2022-01-10 07:13:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83077 to 51375. [2022-01-10 07:13:55,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51375 states, 51374 states have (on average 1.3713551601977654) internal successors, (70452), 51374 states have internal predecessors, (70452), 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 07:13:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51375 states to 51375 states and 70452 transitions. [2022-01-10 07:13:55,977 INFO L78 Accepts]: Start accepts. Automaton has 51375 states and 70452 transitions. Word has length 103 [2022-01-10 07:13:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:13:55,977 INFO L470 AbstractCegarLoop]: Abstraction has 51375 states and 70452 transitions. [2022-01-10 07:13:55,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 07:13:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 51375 states and 70452 transitions. [2022-01-10 07:13:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 07:13:56,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:13:56,003 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] [2022-01-10 07:13:56,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 07:13:56,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:13:56,210 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:13:56,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:13:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 864440139, now seen corresponding path program 1 times [2022-01-10 07:13:56,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:13:56,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719948302] [2022-01-10 07:13:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:13:56,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:13:56,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:13:56,212 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:13:56,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:13:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:13:56,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:13:56,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:13:56,460 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 07:13:56,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:13:56,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:13:56,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719948302] [2022-01-10 07:13:56,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719948302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:13:56,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:13:56,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:13:56,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816605702] [2022-01-10 07:13:56,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:13:56,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:13:56,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:13:56,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:13:56,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:13:56,462 INFO L87 Difference]: Start difference. First operand 51375 states and 70452 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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)