/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/Problem15_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:23:26,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:23:26,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:23:26,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:23:26,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:23:26,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:23:26,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:23:26,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:23:26,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:23:26,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:23:26,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:23:26,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:23:26,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:23:26,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:23:26,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:23:26,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:23:26,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 05:23:26,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:23:26,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:23:26,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:23:26,554 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 05:23:26,575 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:23:26,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:23:26,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:23:26,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:23:26,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:23:26,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:23:26,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:23:26,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:23:26,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:23:26,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:23:26,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:23:26,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:23:26,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:23:26,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:23:26,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:23:26,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:23:26,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:23:26,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:23:26,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:23:26,718 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:23:26,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2022-01-10 05:23:26,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5365feef/9a7eb015d3a24cf0ad14f0474404a2d4/FLAG74ef882d8 [2022-01-10 05:23:27,242 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:23:27,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label38.c [2022-01-10 05:23:27,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5365feef/9a7eb015d3a24cf0ad14f0474404a2d4/FLAG74ef882d8 [2022-01-10 05:23:27,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5365feef/9a7eb015d3a24cf0ad14f0474404a2d4 [2022-01-10 05:23:27,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:23:27,565 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:23:27,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:23:27,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:23:27,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:23:27,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:23:27" (1/1) ... [2022-01-10 05:23:27,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6246b216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:27, skipping insertion in model container [2022-01-10 05:23:27,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:23:27" (1/1) ... [2022-01-10 05:23:27,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:23:27,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:23:27,814 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/Problem15_label38.c[3800,3813] [2022-01-10 05:23:28,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:23:28,154 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:23:28,176 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/Problem15_label38.c[3800,3813] [2022-01-10 05:23:28,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:23:28,315 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:23:28,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28 WrapperNode [2022-01-10 05:23:28,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:23:28,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:23:28,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:23:28,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:23:28,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,438 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1755 [2022-01-10 05:23:28,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:23:28,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:23:28,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:23:28,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:23:28,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:23:28,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:23:28,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:23:28,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:23:28,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (1/1) ... [2022-01-10 05:23:28,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:23:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:23:28,558 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 05:23:28,585 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 05:23:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:23:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:23:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:23:28,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:23:28,657 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:23:28,658 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:23:41,669 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:23:41,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:23:41,679 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:23:41,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:23:41 BoogieIcfgContainer [2022-01-10 05:23:41,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:23:41,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:23:41,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:23:41,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:23:41,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:23:27" (1/3) ... [2022-01-10 05:23:41,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71489483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:23:41, skipping insertion in model container [2022-01-10 05:23:41,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:23:28" (2/3) ... [2022-01-10 05:23:41,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71489483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:23:41, skipping insertion in model container [2022-01-10 05:23:41,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:23:41" (3/3) ... [2022-01-10 05:23:41,692 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label38.c [2022-01-10 05:23:41,696 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:23:41,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:23:41,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:23:41,744 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 05:23:41,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:23:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 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 05:23:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 05:23:41,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:23:41,776 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 05:23:41,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:23:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:23:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times [2022-01-10 05:23:41,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:23:41,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057031866] [2022-01-10 05:23:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:23:41,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:23:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:23:41,790 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 05:23:41,798 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 05:23:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:23:41,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:23:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:23:41,987 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 05:23:41,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:23:41,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:23:41,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057031866] [2022-01-10 05:23:41,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057031866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:23:41,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:23:41,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:23:41,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141862345] [2022-01-10 05:23:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:23:41,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:23:41,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:23:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:23:42,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:23:42,017 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 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 10.0) 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 05:23:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:23:58,918 INFO L93 Difference]: Finished difference Result 1179 states and 2143 transitions. [2022-01-10 05:23:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:23:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) 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 05:23:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:23:58,931 INFO L225 Difference]: With dead ends: 1179 [2022-01-10 05:23:58,931 INFO L226 Difference]: Without dead ends: 676 [2022-01-10 05:23:58,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 05:23:58,936 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 309 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:23:58,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 277 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2022-01-10 05:23:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-01-10 05:23:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 668. [2022-01-10 05:23:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 1.5772113943028485) internal successors, (1052), 667 states have internal predecessors, (1052), 0 states have call successors, (0), 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 05:23:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1052 transitions. [2022-01-10 05:23:58,988 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1052 transitions. Word has length 30 [2022-01-10 05:23:58,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:23:58,988 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1052 transitions. [2022-01-10 05:23:58,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) 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 05:23:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1052 transitions. [2022-01-10 05:23:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 05:23:58,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:23:58,990 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:23:58,998 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 05:23:59,197 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 05:23:59,197 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:23:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:23:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1115416254, now seen corresponding path program 1 times [2022-01-10 05:23:59,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:23:59,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352304123] [2022-01-10 05:23:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:23:59,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:23:59,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:23:59,201 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 05:23:59,202 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 05:23:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:23:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:23:59,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:23:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:23:59,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:23:59,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:23:59,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352304123] [2022-01-10 05:23:59,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352304123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:23:59,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:23:59,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:23:59,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600867366] [2022-01-10 05:23:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:23:59,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:23:59,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:23:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:23:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:23:59,519 INFO L87 Difference]: Start difference. First operand 668 states and 1052 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 05:24:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:24:20,293 INFO L93 Difference]: Finished difference Result 1630 states and 2635 transitions. [2022-01-10 05:24:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:24:20,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 05:24:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:24:20,313 INFO L225 Difference]: With dead ends: 1630 [2022-01-10 05:24:20,313 INFO L226 Difference]: Without dead ends: 964 [2022-01-10 05:24:20,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 05:24:20,315 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 248 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:24:20,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 347 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2022-01-10 05:24:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2022-01-10 05:24:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 962. [2022-01-10 05:24:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 1.3631633714880333) internal successors, (1310), 961 states have internal predecessors, (1310), 0 states have call successors, (0), 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 05:24:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1310 transitions. [2022-01-10 05:24:20,344 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1310 transitions. Word has length 96 [2022-01-10 05:24:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:24:20,344 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 1310 transitions. [2022-01-10 05:24:20,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 05:24:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1310 transitions. [2022-01-10 05:24:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 05:24:20,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:24:20,346 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:24:20,358 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 05:24:20,547 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 05:24:20,548 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:24:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:24:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash 55311796, now seen corresponding path program 1 times [2022-01-10 05:24:20,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:24:20,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507679266] [2022-01-10 05:24:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:24:20,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:24:20,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:24:20,550 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 05:24:20,551 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 05:24:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:24:20,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:24:20,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:24:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:24:20,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:24:20,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:24:20,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507679266] [2022-01-10 05:24:20,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507679266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:24:20,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:24:20,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:24:20,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967714791] [2022-01-10 05:24:20,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:24:20,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:24:20,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:24:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:24:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:24:20,830 INFO L87 Difference]: Start difference. First operand 962 states and 1310 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:24:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:24:40,230 INFO L93 Difference]: Finished difference Result 1928 states and 2831 transitions. [2022-01-10 05:24:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:24:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 05:24:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:24:40,234 INFO L225 Difference]: With dead ends: 1928 [2022-01-10 05:24:40,234 INFO L226 Difference]: Without dead ends: 1267 [2022-01-10 05:24:40,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 05:24:40,236 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 256 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:24:40,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 318 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time] [2022-01-10 05:24:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-10 05:24:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265. [2022-01-10 05:24:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.3045886075949367) internal successors, (1649), 1264 states have internal predecessors, (1649), 0 states have call successors, (0), 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 05:24:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1649 transitions. [2022-01-10 05:24:40,261 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1649 transitions. Word has length 100 [2022-01-10 05:24:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:24:40,261 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1649 transitions. [2022-01-10 05:24:40,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:24:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1649 transitions. [2022-01-10 05:24:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-01-10 05:24:40,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:24:40,265 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:24:40,275 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 05:24:40,472 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 05:24:40,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:24:40,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:24:40,473 INFO L85 PathProgramCache]: Analyzing trace with hash 437312665, now seen corresponding path program 1 times [2022-01-10 05:24:40,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:24:40,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424751459] [2022-01-10 05:24:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:24:40,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:24:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:24:40,475 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 05:24:40,477 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 05:24:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:24:40,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 05:24:40,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:24:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:24:42,303 INFO L328 TraceCheckSpWp]: Computing backward predicates...