/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:56:54,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:56:54,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:56:54,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 04:56:54,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:56:54,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:56:54,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:56:54,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:56:54,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:56:54,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:56:54,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:56:54,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:56:54,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:56:54,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:56:54,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:56:54,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:56:54,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 04:56:54,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:56:54,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:56:54,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:56:54,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:56:54,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:56:54,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:56:54,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:56:54,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:56:54,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:56:54,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:56:54,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:56:54,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:56:54,618 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:56:54,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:56:54,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:56:54,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:56:54,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:56:54,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:56:54,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:56:54,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:56:54,621 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:56:54,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:56:54,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:56:54,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:56:54,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:56:54,843 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:56:54,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label49.c [2022-01-10 04:56:54,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c5aeef3/65dc4957180c428886197790ca443cdb/FLAGa38fdbc17 [2022-01-10 04:56:55,328 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:56:55,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label49.c [2022-01-10 04:56:55,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c5aeef3/65dc4957180c428886197790ca443cdb/FLAGa38fdbc17 [2022-01-10 04:56:55,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c5aeef3/65dc4957180c428886197790ca443cdb [2022-01-10 04:56:55,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:56:55,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:56:55,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:56:55,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:56:55,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:56:55,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69cd8074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55, skipping insertion in model container [2022-01-10 04:56:55,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:56:55,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:56:55,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label49.c[2714,2727] [2022-01-10 04:56:55,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:56:55,663 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:56:55,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label49.c[2714,2727] [2022-01-10 04:56:55,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:56:55,766 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:56:55,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55 WrapperNode [2022-01-10 04:56:55,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:56:55,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:56:55,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:56:55,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:56:55,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,836 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595 [2022-01-10 04:56:55,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:56:55,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:56:55,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:56:55,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:56:55,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:56:55,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:56:55,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:56:55,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:56:55,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (1/1) ... [2022-01-10 04:56:55,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:56:55,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:56:55,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 04:56:55,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 04:56:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:56:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:56:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:56:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:56:56,013 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:56:56,014 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:56:57,846 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:56:57,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:56:57,852 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 04:56:57,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:56:57 BoogieIcfgContainer [2022-01-10 04:56:57,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:56:57,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:56:57,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:56:57,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:56:57,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:56:55" (1/3) ... [2022-01-10 04:56:57,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b033c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:56:57, skipping insertion in model container [2022-01-10 04:56:57,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:56:55" (2/3) ... [2022-01-10 04:56:57,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b033c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:56:57, skipping insertion in model container [2022-01-10 04:56:57,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:56:57" (3/3) ... [2022-01-10 04:56:57,858 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label49.c [2022-01-10 04:56:57,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:56:57,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:56:57,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:56:57,896 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:56:57,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:56:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:56:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 04:56:57,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:56:57,925 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] [2022-01-10 04:56:57,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:56:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:56:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1644072970, now seen corresponding path program 1 times [2022-01-10 04:56:57,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:56:57,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698677324] [2022-01-10 04:56:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:56:57,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:56:57,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:56:57,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:56:57,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:56:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:56:57,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:56:57,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:56:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:56:58,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:56:58,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:56:58,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698677324] [2022-01-10 04:56:58,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698677324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:56:58,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:56:58,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:56:58,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95653358] [2022-01-10 04:56:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:56:58,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:56:58,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:56:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:56:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:56:58,115 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:00,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:57:00,579 INFO L93 Difference]: Finished difference Result 567 states and 981 transitions. [2022-01-10 04:57:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:57:00,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-01-10 04:57:00,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:57:00,589 INFO L225 Difference]: With dead ends: 567 [2022-01-10 04:57:00,589 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 04:57:00,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:57:00,594 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 140 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 04:57:00,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 103 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 04:57:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 04:57:00,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-10 04:57:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.395017793594306) internal successors, (392), 281 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 392 transitions. [2022-01-10 04:57:00,631 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 392 transitions. Word has length 22 [2022-01-10 04:57:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:57:00,631 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 392 transitions. [2022-01-10 04:57:00,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 392 transitions. [2022-01-10 04:57:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 04:57:00,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:57:00,634 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:57:00,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 04:57:00,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:57:00,834 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:57:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:57:00,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1869682614, now seen corresponding path program 1 times [2022-01-10 04:57:00,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:57:00,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759124103] [2022-01-10 04:57:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:57:00,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:57:00,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:57:00,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:57:00,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:57:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:57:00,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 04:57:00,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:57:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:57:01,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:57:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:57:03,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:57:03,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759124103] [2022-01-10 04:57:03,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759124103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:57:03,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:57:03,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 04:57:03,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100241680] [2022-01-10 04:57:03,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:57:03,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 04:57:03,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:57:03,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 04:57:03,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:57:03,372 INFO L87 Difference]: Start difference. First operand 282 states and 392 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:57:22,105 INFO L93 Difference]: Finished difference Result 840 states and 1253 transitions. [2022-01-10 04:57:22,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:57:22,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 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 88 [2022-01-10 04:57:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:57:22,120 INFO L225 Difference]: With dead ends: 840 [2022-01-10 04:57:22,120 INFO L226 Difference]: Without dead ends: 699 [2022-01-10 04:57:22,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:57:22,122 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 523 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-01-10 04:57:22,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 51 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2022-01-10 04:57:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-01-10 04:57:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-01-10 04:57:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.3896848137535818) internal successors, (970), 698 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 970 transitions. [2022-01-10 04:57:22,173 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 970 transitions. Word has length 88 [2022-01-10 04:57:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:57:22,173 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 970 transitions. [2022-01-10 04:57:22,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 970 transitions. [2022-01-10 04:57:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 04:57:22,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:57:22,183 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:57:22,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:57:22,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:57:22,387 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:57:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:57:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1186072980, now seen corresponding path program 1 times [2022-01-10 04:57:22,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:57:22,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767783857] [2022-01-10 04:57:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:57:22,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:57:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:57:22,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:57:22,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:57:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:57:22,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:57:22,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:57:22,593 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 04:57:22,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:57:22,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:57:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767783857] [2022-01-10 04:57:22,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767783857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:57:22,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:57:22,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 04:57:22,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25054745] [2022-01-10 04:57:22,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:57:22,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:57:22,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:57:22,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:57:22,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:57:22,595 INFO L87 Difference]: Start difference. First operand 699 states and 970 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:57:25,203 INFO L93 Difference]: Finished difference Result 1813 states and 2562 transitions. [2022-01-10 04:57:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:57:25,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 04:57:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:57:25,219 INFO L225 Difference]: With dead ends: 1813 [2022-01-10 04:57:25,219 INFO L226 Difference]: Without dead ends: 1116 [2022-01-10 04:57:25,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:57:25,228 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 04:57:25,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 77 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 04:57:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-10 04:57:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 838. [2022-01-10 04:57:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.3189964157706093) internal successors, (1104), 837 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1104 transitions. [2022-01-10 04:57:25,259 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1104 transitions. Word has length 92 [2022-01-10 04:57:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:57:25,259 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1104 transitions. [2022-01-10 04:57:25,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1104 transitions. [2022-01-10 04:57:25,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 04:57:25,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:57:25,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:57:25,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:57:25,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:57:25,468 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:57:25,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:57:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -751446652, now seen corresponding path program 1 times [2022-01-10 04:57:25,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:57:25,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116334777] [2022-01-10 04:57:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:57:25,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:57:25,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:57:25,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:57:25,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:57:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:57:25,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:57:25,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:57:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:57:25,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 04:57:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:57:28,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:57:28,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116334777] [2022-01-10 04:57:28,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116334777] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 04:57:28,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 04:57:28,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 04:57:28,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824284794] [2022-01-10 04:57:28,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 04:57:28,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:57:28,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:57:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:57:28,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:57:28,203 INFO L87 Difference]: Start difference. First operand 838 states and 1104 transitions. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:57:44,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []