/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:02:52,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:02:52,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:02:52,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:02:52,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:02:52,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:02:52,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:02:52,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:02:52,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:02:52,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:02:52,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:02:52,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:02:52,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:02:52,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:02:52,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:02:52,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:02:52,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:02:52,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:02:52,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:02:52,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:02:52,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:02:52,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:02:52,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:02:52,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:02:52,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:02:52,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:02:52,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:02:52,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:02:52,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 08:02:52,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:02:52,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:02:52,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:02:52,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:02:52,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:02:52,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:02:52,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:02:52,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:02:52,619 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:02:52,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:02:52,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:02:52,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:02:52,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:02:52,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:02:52,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:02:52,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:02:52,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:02:52,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:02:52,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:02:52,622 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:02:52,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:02:52,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:02:52,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:02:52,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:02:52,856 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:02:52,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-01-10 08:02:52,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c0b8864/96ffae6f28cb4cb8a94c95ba33efc7e2/FLAG8332c0bde [2022-01-10 08:02:53,493 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:02:53,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-01-10 08:02:53,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c0b8864/96ffae6f28cb4cb8a94c95ba33efc7e2/FLAG8332c0bde [2022-01-10 08:02:53,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c0b8864/96ffae6f28cb4cb8a94c95ba33efc7e2 [2022-01-10 08:02:53,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:02:53,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:02:53,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:02:53,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:02:53,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:02:53,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:02:53" (1/1) ... [2022-01-10 08:02:53,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54be2d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:53, skipping insertion in model container [2022-01-10 08:02:53,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:02:53" (1/1) ... [2022-01-10 08:02:53,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:02:53,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:02:54,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2022-01-10 08:02:54,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2022-01-10 08:02:54,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:02:54,666 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:02:54,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2022-01-10 08:02:54,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2022-01-10 08:02:54,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:02:55,018 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:02:55,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55 WrapperNode [2022-01-10 08:02:55,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:02:55,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:02:55,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:02:55,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:02:55,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,269 INFO L137 Inliner]: procedures = 37, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5011 [2022-01-10 08:02:55,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:02:55,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:02:55,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:02:55,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:02:55,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:02:55,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:02:55,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:02:55,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:02:55,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (1/1) ... [2022-01-10 08:02:55,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:02:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:02:55,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 08:02:55,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 08:02:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:02:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:02:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:02:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:02:55,722 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:02:55,723 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:03:18,761 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:03:18,772 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:03:18,772 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:03:18,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:03:18 BoogieIcfgContainer [2022-01-10 08:03:18,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:03:18,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:03:18,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:03:18,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:03:18,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:02:53" (1/3) ... [2022-01-10 08:03:18,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e5560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:03:18, skipping insertion in model container [2022-01-10 08:03:18,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:02:55" (2/3) ... [2022-01-10 08:03:18,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e5560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:03:18, skipping insertion in model container [2022-01-10 08:03:18,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:03:18" (3/3) ... [2022-01-10 08:03:18,779 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-01-10 08:03:18,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:03:18,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:03:18,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:03:18,818 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 08:03:18,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:03:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 08:03:18,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:18,842 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] [2022-01-10 08:03:18,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:18,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2085104645, now seen corresponding path program 1 times [2022-01-10 08:03:18,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:18,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606350550] [2022-01-10 08:03:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:18,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:18,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:18,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 08:03:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:18,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 08:03:18,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:18,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:18,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:18,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606350550] [2022-01-10 08:03:18,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606350550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:18,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:18,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:03:18,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839244736] [2022-01-10 08:03:18,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:19,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:03:19,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:03:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:03:19,034 INFO L87 Difference]: Start difference. First operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:19,122 INFO L93 Difference]: Finished difference Result 1759 states and 3336 transitions. [2022-01-10 08:03:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:03:19,123 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 08:03:19,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:19,138 INFO L225 Difference]: With dead ends: 1759 [2022-01-10 08:03:19,138 INFO L226 Difference]: Without dead ends: 829 [2022-01-10 08:03:19,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:03:19,150 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:19,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-01-10 08:03:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-01-10 08:03:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 827 states have (on average 1.8899637243047158) internal successors, (1563), 828 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1563 transitions. [2022-01-10 08:03:19,244 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1563 transitions. Word has length 30 [2022-01-10 08:03:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:19,244 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1563 transitions. [2022-01-10 08:03:19,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1563 transitions. [2022-01-10 08:03:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 08:03:19,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:19,245 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] [2022-01-10 08:03:19,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:19,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:19,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1951091139, now seen corresponding path program 1 times [2022-01-10 08:03:19,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:19,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521885481] [2022-01-10 08:03:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:19,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:19,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:19,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:19,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 08:03:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:19,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:03:19,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:19,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:19,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:19,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521885481] [2022-01-10 08:03:19,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521885481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:19,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:19,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:03:19,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013203494] [2022-01-10 08:03:19,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:19,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:03:19,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:03:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:03:19,661 INFO L87 Difference]: Start difference. First operand 829 states and 1563 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:19,738 INFO L93 Difference]: Finished difference Result 879 states and 1639 transitions. [2022-01-10 08:03:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:03:19,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 08:03:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:19,741 INFO L225 Difference]: With dead ends: 879 [2022-01-10 08:03:19,741 INFO L226 Difference]: Without dead ends: 829 [2022-01-10 08:03:19,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:03:19,743 INFO L933 BasicCegarLoop]: 1561 mSDtfsCounter, 3 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:19,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6218 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-01-10 08:03:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-01-10 08:03:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 827 states have (on average 1.8621523579201935) internal successors, (1540), 828 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1540 transitions. [2022-01-10 08:03:19,806 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1540 transitions. Word has length 30 [2022-01-10 08:03:19,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:19,807 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 1540 transitions. [2022-01-10 08:03:19,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1540 transitions. [2022-01-10 08:03:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 08:03:19,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:19,808 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] [2022-01-10 08:03:19,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:20,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:20,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:20,011 INFO L85 PathProgramCache]: Analyzing trace with hash 568524862, now seen corresponding path program 1 times [2022-01-10 08:03:20,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:20,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787303183] [2022-01-10 08:03:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:20,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:20,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:20,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:20,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 08:03:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:20,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:03:20,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:20,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:20,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787303183] [2022-01-10 08:03:20,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787303183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:20,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:20,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:03:20,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336199422] [2022-01-10 08:03:20,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:20,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:03:20,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:03:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:03:20,614 INFO L87 Difference]: Start difference. First operand 829 states and 1540 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:20,755 INFO L93 Difference]: Finished difference Result 1059 states and 1900 transitions. [2022-01-10 08:03:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:03:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 08:03:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:20,760 INFO L225 Difference]: With dead ends: 1059 [2022-01-10 08:03:20,760 INFO L226 Difference]: Without dead ends: 1013 [2022-01-10 08:03:20,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:03:20,764 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 4802 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:20,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 1813 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:03:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-10 08:03:20,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 917. [2022-01-10 08:03:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 915 states have (on average 1.8349726775956283) internal successors, (1679), 916 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1679 transitions. [2022-01-10 08:03:20,782 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1679 transitions. Word has length 52 [2022-01-10 08:03:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:20,782 INFO L470 AbstractCegarLoop]: Abstraction has 917 states and 1679 transitions. [2022-01-10 08:03:20,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1679 transitions. [2022-01-10 08:03:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 08:03:20,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:20,789 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] [2022-01-10 08:03:20,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:20,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:20,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:20,999 INFO L85 PathProgramCache]: Analyzing trace with hash -524152242, now seen corresponding path program 1 times [2022-01-10 08:03:20,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:20,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739865132] [2022-01-10 08:03:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:20,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:21,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:21,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:21,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 08:03:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:21,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:21,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:21,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:21,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:21,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739865132] [2022-01-10 08:03:21,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739865132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:21,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:21,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:03:21,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919208851] [2022-01-10 08:03:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:21,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:21,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:21,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:21,182 INFO L87 Difference]: Start difference. First operand 917 states and 1679 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:21,215 INFO L93 Difference]: Finished difference Result 1169 states and 2073 transitions. [2022-01-10 08:03:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 08:03:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:21,219 INFO L225 Difference]: With dead ends: 1169 [2022-01-10 08:03:21,219 INFO L226 Difference]: Without dead ends: 1035 [2022-01-10 08:03:21,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:21,221 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:21,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1601 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-01-10 08:03:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1030. [2022-01-10 08:03:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1028 states have (on average 1.7996108949416343) internal successors, (1850), 1029 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1850 transitions. [2022-01-10 08:03:21,251 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1850 transitions. Word has length 54 [2022-01-10 08:03:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:21,253 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 1850 transitions. [2022-01-10 08:03:21,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1850 transitions. [2022-01-10 08:03:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 08:03:21,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:21,255 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] [2022-01-10 08:03:21,267 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 08:03:21,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:21,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1331255346, now seen corresponding path program 1 times [2022-01-10 08:03:21,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:21,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111281302] [2022-01-10 08:03:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:21,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:21,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:21,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 08:03:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:21,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:21,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:21,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:21,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:21,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111281302] [2022-01-10 08:03:21,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111281302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:21,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:21,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:03:21,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682343219] [2022-01-10 08:03:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:21,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:21,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:21,670 INFO L87 Difference]: Start difference. First operand 1030 states and 1850 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:21,698 INFO L93 Difference]: Finished difference Result 1488 states and 2554 transitions. [2022-01-10 08:03:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 08:03:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:21,703 INFO L225 Difference]: With dead ends: 1488 [2022-01-10 08:03:21,703 INFO L226 Difference]: Without dead ends: 1241 [2022-01-10 08:03:21,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:21,704 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:21,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1639 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-01-10 08:03:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2022-01-10 08:03:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.750202101859337) internal successors, (2165), 1238 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2165 transitions. [2022-01-10 08:03:21,725 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2165 transitions. Word has length 54 [2022-01-10 08:03:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:21,726 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 2165 transitions. [2022-01-10 08:03:21,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2165 transitions. [2022-01-10 08:03:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 08:03:21,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:21,728 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] [2022-01-10 08:03:21,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 08:03:21,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:21,934 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1716204334, now seen corresponding path program 1 times [2022-01-10 08:03:21,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:21,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857105100] [2022-01-10 08:03:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:21,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:21,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:21,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:21,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 08:03:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:22,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:22,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:22,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:22,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:22,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857105100] [2022-01-10 08:03:22,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857105100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:22,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:22,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:03:22,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868199194] [2022-01-10 08:03:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:22,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:22,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:22,164 INFO L87 Difference]: Start difference. First operand 1239 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:22,199 INFO L93 Difference]: Finished difference Result 2079 states and 3439 transitions. [2022-01-10 08:03:22,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:22,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 08:03:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:22,205 INFO L225 Difference]: With dead ends: 2079 [2022-01-10 08:03:22,205 INFO L226 Difference]: Without dead ends: 1623 [2022-01-10 08:03:22,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:22,208 INFO L933 BasicCegarLoop]: 1570 mSDtfsCounter, 1493 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:22,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1648 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-01-10 08:03:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1621. [2022-01-10 08:03:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1619 states have (on average 1.6856084002470662) internal successors, (2729), 1620 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2729 transitions. [2022-01-10 08:03:22,238 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2729 transitions. Word has length 54 [2022-01-10 08:03:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:22,238 INFO L470 AbstractCegarLoop]: Abstraction has 1621 states and 2729 transitions. [2022-01-10 08:03:22,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2729 transitions. [2022-01-10 08:03:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 08:03:22,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:22,239 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] [2022-01-10 08:03:22,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:22,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:22,447 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1442516622, now seen corresponding path program 1 times [2022-01-10 08:03:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:22,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650207348] [2022-01-10 08:03:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:22,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:22,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:22,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:22,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 08:03:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:22,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:22,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:22,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:22,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:22,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650207348] [2022-01-10 08:03:22,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650207348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:22,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:22,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:03:22,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640249416] [2022-01-10 08:03:22,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:22,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:22,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:22,619 INFO L87 Difference]: Start difference. First operand 1621 states and 2729 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:22,654 INFO L93 Difference]: Finished difference Result 3153 states and 5011 transitions. [2022-01-10 08:03:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:22,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 08:03:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:22,661 INFO L225 Difference]: With dead ends: 3153 [2022-01-10 08:03:22,661 INFO L226 Difference]: Without dead ends: 2315 [2022-01-10 08:03:22,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:22,663 INFO L933 BasicCegarLoop]: 1583 mSDtfsCounter, 1497 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:22,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2022-01-10 08:03:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2313. [2022-01-10 08:03:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2311 states have (on average 1.6118563392470793) internal successors, (3725), 2312 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3725 transitions. [2022-01-10 08:03:22,701 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3725 transitions. Word has length 54 [2022-01-10 08:03:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:22,702 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3725 transitions. [2022-01-10 08:03:22,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3725 transitions. [2022-01-10 08:03:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 08:03:22,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:22,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:03:22,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:22,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:22,910 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1717241860, now seen corresponding path program 1 times [2022-01-10 08:03:22,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:22,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426900819] [2022-01-10 08:03:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:22,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:22,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:22,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 08:03:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:22,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:03:22,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:23,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:23,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:23,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426900819] [2022-01-10 08:03:23,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426900819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:23,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:23,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:03:23,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892195056] [2022-01-10 08:03:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:23,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:03:23,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:03:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:03:23,061 INFO L87 Difference]: Start difference. First operand 2313 states and 3725 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:23,200 INFO L93 Difference]: Finished difference Result 3588 states and 5556 transitions. [2022-01-10 08:03:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:03:23,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 08:03:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:23,211 INFO L225 Difference]: With dead ends: 3588 [2022-01-10 08:03:23,211 INFO L226 Difference]: Without dead ends: 3586 [2022-01-10 08:03:23,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:03:23,213 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 186 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6202 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:23,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 6202 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:03:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2022-01-10 08:03:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 2409. [2022-01-10 08:03:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2407 states have (on average 1.58412962193602) internal successors, (3813), 2408 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3813 transitions. [2022-01-10 08:03:23,338 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3813 transitions. Word has length 55 [2022-01-10 08:03:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:23,339 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 3813 transitions. [2022-01-10 08:03:23,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3813 transitions. [2022-01-10 08:03:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 08:03:23,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:23,339 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] [2022-01-10 08:03:23,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:23,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:23,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:23,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:23,548 INFO L85 PathProgramCache]: Analyzing trace with hash -754642547, now seen corresponding path program 1 times [2022-01-10 08:03:23,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:23,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868070397] [2022-01-10 08:03:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:23,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:23,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:23,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:23,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 08:03:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:23,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:23,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:23,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:23,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:23,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868070397] [2022-01-10 08:03:23,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868070397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:23,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:23,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:03:23,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617475704] [2022-01-10 08:03:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:23,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:23,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:23,708 INFO L87 Difference]: Start difference. First operand 2409 states and 3813 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:23,761 INFO L93 Difference]: Finished difference Result 4048 states and 6219 transitions. [2022-01-10 08:03:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:23,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 08:03:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:23,770 INFO L225 Difference]: With dead ends: 4048 [2022-01-10 08:03:23,770 INFO L226 Difference]: Without dead ends: 3133 [2022-01-10 08:03:23,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:23,775 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1498 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:23,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1661 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-01-10 08:03:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3131. [2022-01-10 08:03:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3129 states have (on average 1.5452221156919144) internal successors, (4835), 3130 states have internal predecessors, (4835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4835 transitions. [2022-01-10 08:03:23,840 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4835 transitions. Word has length 56 [2022-01-10 08:03:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:23,840 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 4835 transitions. [2022-01-10 08:03:23,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4835 transitions. [2022-01-10 08:03:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 08:03:23,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:23,841 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] [2022-01-10 08:03:23,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 08:03:24,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:24,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash 238773285, now seen corresponding path program 1 times [2022-01-10 08:03:24,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:24,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009591351] [2022-01-10 08:03:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:24,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:24,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:24,050 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:24,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 08:03:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:24,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:24,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:24,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:24,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:24,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009591351] [2022-01-10 08:03:24,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009591351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:24,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:24,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:03:24,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078523870] [2022-01-10 08:03:24,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:24,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:24,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:24,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:24,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:24,221 INFO L87 Difference]: Start difference. First operand 3131 states and 4835 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:56,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:56,535 INFO L93 Difference]: Finished difference Result 4635 states and 7708 transitions. [2022-01-10 08:03:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:56,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 08:03:56,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:56,545 INFO L225 Difference]: With dead ends: 4635 [2022-01-10 08:03:56,545 INFO L226 Difference]: Without dead ends: 3882 [2022-01-10 08:03:56,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:56,546 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 837 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:56,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 648 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 32.1s Time] [2022-01-10 08:03:56,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-01-10 08:03:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3882. [2022-01-10 08:03:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 3880 states have (on average 1.479896907216495) internal successors, (5742), 3881 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5742 transitions. [2022-01-10 08:03:56,627 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5742 transitions. Word has length 60 [2022-01-10 08:03:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:56,627 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5742 transitions. [2022-01-10 08:03:56,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5742 transitions. [2022-01-10 08:03:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 08:03:56,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:56,629 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:03:56,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:56,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:56,835 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash 457839235, now seen corresponding path program 1 times [2022-01-10 08:03:56,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:56,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923410499] [2022-01-10 08:03:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:56,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:56,856 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:56,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 08:03:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:56,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:56,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:57,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:57,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923410499] [2022-01-10 08:03:57,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923410499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:57,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:57,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:03:57,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006436372] [2022-01-10 08:03:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:57,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:57,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:57,056 INFO L87 Difference]: Start difference. First operand 3882 states and 5742 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:57,109 INFO L93 Difference]: Finished difference Result 5544 states and 8151 transitions. [2022-01-10 08:03:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:57,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 08:03:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:57,118 INFO L225 Difference]: With dead ends: 5544 [2022-01-10 08:03:57,118 INFO L226 Difference]: Without dead ends: 3198 [2022-01-10 08:03:57,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:57,122 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 45 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:57,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 3096 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2022-01-10 08:03:57,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3196. [2022-01-10 08:03:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 3194 states have (on average 1.4902943018159047) internal successors, (4760), 3195 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4760 transitions. [2022-01-10 08:03:57,196 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4760 transitions. Word has length 79 [2022-01-10 08:03:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:57,196 INFO L470 AbstractCegarLoop]: Abstraction has 3196 states and 4760 transitions. [2022-01-10 08:03:57,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4760 transitions. [2022-01-10 08:03:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 08:03:57,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:57,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:03:57,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 08:03:57,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:57,409 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1280354104, now seen corresponding path program 1 times [2022-01-10 08:03:57,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:57,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242754677] [2022-01-10 08:03:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:57,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:57,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:57,411 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:57,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 08:03:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:57,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:03:57,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:58,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:03:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:59,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:59,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242754677] [2022-01-10 08:03:59,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242754677] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:03:59,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:03:59,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 08:03:59,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873225161] [2022-01-10 08:03:59,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:03:59,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 08:03:59,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 08:03:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 08:03:59,036 INFO L87 Difference]: Start difference. First operand 3196 states and 4760 transitions. Second operand has 16 states, 16 states have (on average 8.8125) internal successors, (141), 15 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:59,332 INFO L93 Difference]: Finished difference Result 4857 states and 7144 transitions. [2022-01-10 08:03:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 08:03:59,332 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 15 states have internal predecessors, (141), 0 states have call successors, (0), 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 81 [2022-01-10 08:03:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:59,351 INFO L225 Difference]: With dead ends: 4857 [2022-01-10 08:03:59,351 INFO L226 Difference]: Without dead ends: 3223 [2022-01-10 08:03:59,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-01-10 08:03:59,355 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 5832 mSDsluCounter, 10642 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5832 SdHoareTripleChecker+Valid, 12163 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:59,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5832 Valid, 12163 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-01-10 08:03:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2022-01-10 08:03:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3223. [2022-01-10 08:03:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3221 states have (on average 1.4871158025457933) internal successors, (4790), 3222 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4790 transitions. [2022-01-10 08:03:59,423 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4790 transitions. Word has length 81 [2022-01-10 08:03:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:59,424 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 4790 transitions. [2022-01-10 08:03:59,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.8125) internal successors, (141), 15 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4790 transitions. [2022-01-10 08:03:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 08:03:59,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:59,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:03:59,432 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 08:03:59,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:03:59,632 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:03:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:03:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1706064798, now seen corresponding path program 1 times [2022-01-10 08:03:59,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:03:59,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925406555] [2022-01-10 08:03:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:03:59,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:03:59,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:03:59,644 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:03:59,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 08:03:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:03:59,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:03:59,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:03:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:03:59,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:03:59,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:03:59,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925406555] [2022-01-10 08:03:59,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925406555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:03:59,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:03:59,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:03:59,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518372048] [2022-01-10 08:03:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:03:59,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:03:59,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:03:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:03:59,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:59,873 INFO L87 Difference]: Start difference. First operand 3223 states and 4790 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:03:59,912 INFO L93 Difference]: Finished difference Result 4043 states and 5968 transitions. [2022-01-10 08:03:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:03:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 08:03:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:03:59,916 INFO L225 Difference]: With dead ends: 4043 [2022-01-10 08:03:59,917 INFO L226 Difference]: Without dead ends: 2409 [2022-01-10 08:03:59,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:03:59,919 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 37 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:03:59,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 3081 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:03:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2022-01-10 08:03:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2407. [2022-01-10 08:03:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2405 states have (on average 1.4977130977130977) internal successors, (3602), 2406 states have internal predecessors, (3602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 3602 transitions. [2022-01-10 08:03:59,955 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 3602 transitions. Word has length 81 [2022-01-10 08:03:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:03:59,955 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 3602 transitions. [2022-01-10 08:03:59,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:03:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 3602 transitions. [2022-01-10 08:03:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 08:03:59,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:03:59,956 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:03:59,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 08:04:00,162 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 08:04:00,163 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash -994617816, now seen corresponding path program 1 times [2022-01-10 08:04:00,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:00,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126324859] [2022-01-10 08:04:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:00,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:00,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:00,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:04:00,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 08:04:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:00,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:04:00,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:04:01,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:04:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:04:01,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:01,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126324859] [2022-01-10 08:04:01,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126324859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:04:01,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:04:01,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 08:04:01,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473289536] [2022-01-10 08:04:01,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:04:01,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 08:04:01,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:01,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 08:04:01,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 08:04:01,921 INFO L87 Difference]: Start difference. First operand 2407 states and 3602 transitions. Second operand has 16 states, 16 states have (on average 9.1875) internal successors, (147), 15 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:02,130 INFO L93 Difference]: Finished difference Result 3267 states and 4817 transitions. [2022-01-10 08:04:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 08:04:02,130 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.1875) internal successors, (147), 15 states have internal predecessors, (147), 0 states have call successors, (0), 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 81 [2022-01-10 08:04:02,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:02,134 INFO L225 Difference]: With dead ends: 3267 [2022-01-10 08:04:02,134 INFO L226 Difference]: Without dead ends: 2449 [2022-01-10 08:04:02,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-10 08:04:02,136 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 7311 mSDsluCounter, 10651 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7311 SdHoareTripleChecker+Valid, 12171 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:02,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7311 Valid, 12171 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-01-10 08:04:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2022-01-10 08:04:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2417. [2022-01-10 08:04:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.49648033126294) internal successors, (3614), 2416 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3614 transitions. [2022-01-10 08:04:02,178 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3614 transitions. Word has length 81 [2022-01-10 08:04:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:02,178 INFO L470 AbstractCegarLoop]: Abstraction has 2417 states and 3614 transitions. [2022-01-10 08:04:02,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.1875) internal successors, (147), 15 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3614 transitions. [2022-01-10 08:04:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 08:04:02,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:02,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:04:02,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:04:02,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:04:02,387 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:02,387 INFO L85 PathProgramCache]: Analyzing trace with hash 900372746, now seen corresponding path program 1 times [2022-01-10 08:04:02,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:02,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510051983] [2022-01-10 08:04:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:02,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:02,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:02,393 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:04:02,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 08:04:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:04:02,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 08:04:02,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:02,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:02,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510051983] [2022-01-10 08:04:02,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510051983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:02,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:02,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:04:02,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779392324] [2022-01-10 08:04:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:02,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:04:02,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:04:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:04:02,874 INFO L87 Difference]: Start difference. First operand 2417 states and 3614 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:02,939 INFO L93 Difference]: Finished difference Result 3248 states and 4792 transitions. [2022-01-10 08:04:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:04:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 81 [2022-01-10 08:04:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:02,943 INFO L225 Difference]: With dead ends: 3248 [2022-01-10 08:04:02,943 INFO L226 Difference]: Without dead ends: 2417 [2022-01-10 08:04:02,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:04:02,946 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 2907 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2907 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:02,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2907 Valid, 4514 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2022-01-10 08:04:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2022-01-10 08:04:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2417. [2022-01-10 08:04:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.4960662525879918) internal successors, (3613), 2416 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3613 transitions. [2022-01-10 08:04:02,984 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3613 transitions. Word has length 81 [2022-01-10 08:04:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:02,984 INFO L470 AbstractCegarLoop]: Abstraction has 2417 states and 3613 transitions. [2022-01-10 08:04:02,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3613 transitions. [2022-01-10 08:04:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 08:04:02,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:02,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:04:03,009 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 08:04:03,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:04:03,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash 664487946, now seen corresponding path program 1 times [2022-01-10 08:04:03,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:03,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22319093] [2022-01-10 08:04:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:03,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:03,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:03,196 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:04:03,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 08:04:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:03,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:04:03,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 08:04:03,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:03,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:03,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22319093] [2022-01-10 08:04:03,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22319093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:03,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:03,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:04:03,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213263715] [2022-01-10 08:04:03,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:03,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:04:03,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:03,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:04:03,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:04:03,631 INFO L87 Difference]: Start difference. First operand 2417 states and 3613 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:03,708 INFO L93 Difference]: Finished difference Result 3252 states and 4796 transitions. [2022-01-10 08:04:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:04:03,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 81 [2022-01-10 08:04:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:03,711 INFO L225 Difference]: With dead ends: 3252 [2022-01-10 08:04:03,712 INFO L226 Difference]: Without dead ends: 2417 [2022-01-10 08:04:03,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:04:03,713 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 1460 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:03,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 3142 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-01-10 08:04:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2022-01-10 08:04:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2417. [2022-01-10 08:04:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.4956521739130435) internal successors, (3612), 2416 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3612 transitions. [2022-01-10 08:04:03,751 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3612 transitions. Word has length 81 [2022-01-10 08:04:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:03,752 INFO L470 AbstractCegarLoop]: Abstraction has 2417 states and 3612 transitions. [2022-01-10 08:04:03,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3612 transitions. [2022-01-10 08:04:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 08:04:03,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:03,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:04:03,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 08:04:03,962 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 08:04:03,962 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1134327562, now seen corresponding path program 1 times [2022-01-10 08:04:03,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:03,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022682186] [2022-01-10 08:04:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:03,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:03,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:03,965 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 08:04:03,965 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 08:04:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:04,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:04:04,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:04:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:04:04,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:04:04,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:04:04,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022682186] [2022-01-10 08:04:04,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022682186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:04:04,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:04:04,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:04:04,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298014380] [2022-01-10 08:04:04,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:04:04,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:04:04,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:04:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:04:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:04:04,312 INFO L87 Difference]: Start difference. First operand 2417 states and 3612 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:04:04,376 INFO L93 Difference]: Finished difference Result 3256 states and 4800 transitions. [2022-01-10 08:04:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:04:04,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 81 [2022-01-10 08:04:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:04:04,382 INFO L225 Difference]: With dead ends: 3256 [2022-01-10 08:04:04,382 INFO L226 Difference]: Without dead ends: 2417 [2022-01-10 08:04:04,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:04:04,385 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 2913 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:04:04,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 4502 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2022-01-10 08:04:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2022-01-10 08:04:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2417. [2022-01-10 08:04:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.4952380952380953) internal successors, (3611), 2416 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3611 transitions. [2022-01-10 08:04:04,464 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3611 transitions. Word has length 81 [2022-01-10 08:04:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:04:04,464 INFO L470 AbstractCegarLoop]: Abstraction has 2417 states and 3611 transitions. [2022-01-10 08:04:04,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:04:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3611 transitions. [2022-01-10 08:04:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 08:04:04,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:04:04,465 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:04:04,481 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 08:04:04,671 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 08:04:04,672 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:04:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:04:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 225322506, now seen corresponding path program 1 times [2022-01-10 08:04:04,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:04:04,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080307244] [2022-01-10 08:04:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:04:04,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:04:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:04:04,688 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 08:04:04,689 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 08:04:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:04:04,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:04:04,750 INFO L286 TraceCheckSpWp]: Computing forward predicates...