/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/Problem11_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:02:36,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:02:36,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:02:36,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:02:36,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:02:36,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:02:36,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:02:36,749 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 05:02:36,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:02:36,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:02:36,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:02:36,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:02:36,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:02:36,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:02:36,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:02:36,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:02:36,766 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:02:36,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:02:36,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:02:36,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:02:36,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:02:36,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:02:36,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:02:36,769 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:02:36,769 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:02:36,769 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:02:36,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:02:36,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:02:36,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:02:36,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:02:36,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:02:36,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:02:36,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:02:36,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:02:36,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:02:36,770 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:02:36,771 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:02:36,771 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:02:36,771 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:02:36,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:02:36,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:02:36,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:02:36,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:02:36,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:02:36,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:02:36,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:02:36,976 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:02:36,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2022-01-10 05:02:37,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c03e394ac/9766ad2135134280926e7cd537ad5cb4/FLAG61c42d126 [2022-01-10 05:02:37,453 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:02:37,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label52.c [2022-01-10 05:02:37,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c03e394ac/9766ad2135134280926e7cd537ad5cb4/FLAG61c42d126 [2022-01-10 05:02:37,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c03e394ac/9766ad2135134280926e7cd537ad5cb4 [2022-01-10 05:02:37,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:02:37,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:02:37,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:02:37,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:02:37,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:02:37,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:37,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390db858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37, skipping insertion in model container [2022-01-10 05:02:37,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:37,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:02:37,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:02:37,700 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/Problem11_label52.c[7609,7622] [2022-01-10 05:02:37,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:02:37,847 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:02:37,864 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/Problem11_label52.c[7609,7622] [2022-01-10 05:02:37,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:02:37,955 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:02:37,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37 WrapperNode [2022-01-10 05:02:37,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:02:37,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:02:37,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:02:37,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:02:37,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:37,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,038 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 997 [2022-01-10 05:02:38,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:02:38,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:02:38,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:02:38,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:02:38,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:02:38,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:02:38,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:02:38,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:02:38,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (1/1) ... [2022-01-10 05:02:38,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:02:38,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:02:38,146 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 05:02:38,171 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 05:02:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:02:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:02:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:02:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:02:38,234 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:02:38,235 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:02:43,325 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:02:43,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:02:43,332 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:02:43,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:02:43 BoogieIcfgContainer [2022-01-10 05:02:43,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:02:43,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:02:43,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:02:43,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:02:43,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:02:37" (1/3) ... [2022-01-10 05:02:43,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfa9e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:02:43, skipping insertion in model container [2022-01-10 05:02:43,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:02:37" (2/3) ... [2022-01-10 05:02:43,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfa9e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:02:43, skipping insertion in model container [2022-01-10 05:02:43,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:02:43" (3/3) ... [2022-01-10 05:02:43,338 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label52.c [2022-01-10 05:02:43,341 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:02:43,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:02:43,369 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:02:43,373 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 05:02:43,373 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:02:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 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 05:02:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 05:02:43,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:43,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:02:43,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:43,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:43,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1382487458, now seen corresponding path program 1 times [2022-01-10 05:02:43,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:43,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258209798] [2022-01-10 05:02:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:43,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:43,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:43,403 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 05:02:43,404 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 05:02:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:43,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:02:43,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:43,634 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 05:02:43,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:02:43,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:02:43,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258209798] [2022-01-10 05:02:43,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258209798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:02:43,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:02:43,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:02:43,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327762675] [2022-01-10 05:02:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:02:43,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:02:43,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:02:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:02:43,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:02:43,675 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 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 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:02:50,014 INFO L93 Difference]: Finished difference Result 758 states and 1342 transitions. [2022-01-10 05:02:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:02:50,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-10 05:02:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:02:50,033 INFO L225 Difference]: With dead ends: 758 [2022-01-10 05:02:50,033 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 05:02:50,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 05:02:50,037 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 173 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:02:50,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 220 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 05:02:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 05:02:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-01-10 05:02:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.4572127139364304) internal successors, (596), 409 states have internal predecessors, (596), 0 states have call successors, (0), 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 05:02:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 596 transitions. [2022-01-10 05:02:50,076 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 596 transitions. Word has length 52 [2022-01-10 05:02:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:02:50,076 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 596 transitions. [2022-01-10 05:02:50,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:02:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 596 transitions. [2022-01-10 05:02:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 05:02:50,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:50,080 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, 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] [2022-01-10 05:02:50,088 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 05:02:50,286 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 05:02:50,286 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1697477018, now seen corresponding path program 1 times [2022-01-10 05:02:50,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:50,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130055120] [2022-01-10 05:02:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:50,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:50,289 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 05:02:50,291 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 05:02:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:50,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:02:50,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:50,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:02:50,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:02:50,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130055120] [2022-01-10 05:02:50,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130055120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:02:50,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:02:50,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:02:50,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796209700] [2022-01-10 05:02:50,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:02:50,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:02:50,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:02:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:02:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:02:50,644 INFO L87 Difference]: Start difference. First operand 410 states and 596 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 05:02:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:02:58,437 INFO L93 Difference]: Finished difference Result 1202 states and 1754 transitions. [2022-01-10 05:02:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:02:58,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 05:02:58,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:02:58,445 INFO L225 Difference]: With dead ends: 1202 [2022-01-10 05:02:58,445 INFO L226 Difference]: Without dead ends: 794 [2022-01-10 05:02:58,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 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 05:02:58,447 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 132 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:02:58,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 187 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-01-10 05:02:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-01-10 05:02:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 782. [2022-01-10 05:02:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.3469910371318823) internal successors, (1052), 781 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 05:02:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1052 transitions. [2022-01-10 05:02:58,473 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1052 transitions. Word has length 120 [2022-01-10 05:02:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:02:58,473 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 1052 transitions. [2022-01-10 05:02:58,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 05:02:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1052 transitions. [2022-01-10 05:02:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 05:02:58,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:02:58,476 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, 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] [2022-01-10 05:02:58,489 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 05:02:58,677 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 05:02:58,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:02:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:02:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash 865577478, now seen corresponding path program 1 times [2022-01-10 05:02:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:02:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879152837] [2022-01-10 05:02:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:02:58,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:02:58,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:02:58,680 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 05:02:58,682 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 05:02:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:02:58,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:02:58,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:02:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:02:58,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:02:58,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:02:58,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879152837] [2022-01-10 05:02:58,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879152837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:02:58,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:02:58,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:02:58,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247521484] [2022-01-10 05:02:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:02:58,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:02:58,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:02:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:02:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:02:58,970 INFO L87 Difference]: Start difference. First operand 782 states and 1052 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 05:03:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:03:04,383 INFO L93 Difference]: Finished difference Result 1931 states and 2544 transitions. [2022-01-10 05:03:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:03:04,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-10 05:03:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:03:04,405 INFO L225 Difference]: With dead ends: 1931 [2022-01-10 05:03:04,405 INFO L226 Difference]: Without dead ends: 1151 [2022-01-10 05:03:04,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 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 05:03:04,406 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:03:04,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 194 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 05:03:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-01-10 05:03:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1150. [2022-01-10 05:03:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.2567449956483898) internal successors, (1444), 1149 states have internal predecessors, (1444), 0 states have call successors, (0), 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 05:03:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1444 transitions. [2022-01-10 05:03:04,432 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1444 transitions. Word has length 128 [2022-01-10 05:03:04,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:03:04,433 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1444 transitions. [2022-01-10 05:03:04,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 05:03:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1444 transitions. [2022-01-10 05:03:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 05:03:04,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:03:04,441 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:03:04,450 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 05:03:04,648 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 05:03:04,648 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:03:04,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:03:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1804040649, now seen corresponding path program 1 times [2022-01-10 05:03:04,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:03:04,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697975918] [2022-01-10 05:03:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:03:04,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:03:04,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:03:04,652 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 05:03:04,654 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 05:03:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:03:04,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:03:04,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:03:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:03:04,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:03:04,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:03:04,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697975918] [2022-01-10 05:03:04,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697975918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:03:04,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:03:04,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:03:04,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100501156] [2022-01-10 05:03:04,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:03:04,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:03:04,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:03:04,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:03:04,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:03:04,985 INFO L87 Difference]: Start difference. First operand 1150 states and 1444 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:03:11,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:03:11,795 INFO L93 Difference]: Finished difference Result 1948 states and 2632 transitions. [2022-01-10 05:03:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:03:11,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-01-10 05:03:11,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:03:11,805 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 05:03:11,805 INFO L226 Difference]: Without dead ends: 1542 [2022-01-10 05:03:11,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 05:03:11,807 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 183 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:03:11,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 322 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-01-10 05:03:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-01-10 05:03:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1539. [2022-01-10 05:03:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 1.2711313394018204) internal successors, (1955), 1538 states have internal predecessors, (1955), 0 states have call successors, (0), 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 05:03:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1955 transitions. [2022-01-10 05:03:11,837 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1955 transitions. Word has length 179 [2022-01-10 05:03:11,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:03:11,839 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 1955 transitions. [2022-01-10 05:03:11,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:03:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1955 transitions. [2022-01-10 05:03:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 05:03:11,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:03:11,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:03:11,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:03:12,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:03:12,049 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:03:12,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:03:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1525204054, now seen corresponding path program 1 times [2022-01-10 05:03:12,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:03:12,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802561881] [2022-01-10 05:03:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:03:12,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:03:12,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:03:12,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:03:12,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:03:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:03:12,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:03:12,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:03:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:03:12,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:03:12,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:03:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802561881] [2022-01-10 05:03:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802561881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:03:12,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:03:12,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:03:12,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352774976] [2022-01-10 05:03:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:03:12,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:03:12,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:03:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:03:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:03:12,490 INFO L87 Difference]: Start difference. First operand 1539 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 05:03:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:03:18,912 INFO L93 Difference]: Finished difference Result 3279 states and 4345 transitions. [2022-01-10 05:03:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:03:18,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 05:03:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:03:18,924 INFO L225 Difference]: With dead ends: 3279 [2022-01-10 05:03:18,924 INFO L226 Difference]: Without dead ends: 2110 [2022-01-10 05:03:18,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 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 05:03:18,928 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 137 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-10 05:03:18,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 339 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-10 05:03:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-01-10 05:03:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2097. [2022-01-10 05:03:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.2538167938931297) internal successors, (2628), 2096 states have internal predecessors, (2628), 0 states have call successors, (0), 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 05:03:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2628 transitions. [2022-01-10 05:03:18,951 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2628 transitions. Word has length 232 [2022-01-10 05:03:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:03:18,952 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 2628 transitions. [2022-01-10 05:03:18,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 05:03:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2628 transitions. [2022-01-10 05:03:18,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 05:03:18,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:03:18,954 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:03:18,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 05:03:19,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:03:19,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:03:19,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:03:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1244502432, now seen corresponding path program 1 times [2022-01-10 05:03:19,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:03:19,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007506165] [2022-01-10 05:03:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:03:19,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:03:19,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:03:19,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:03:19,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:03:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:03:19,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 05:03:19,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:03:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:03:20,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:03:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:03:22,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:03:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007506165] [2022-01-10 05:03:22,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007506165] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 05:03:22,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 05:03:22,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 05:03:22,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316195377] [2022-01-10 05:03:22,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:03:22,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:03:22,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:03:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:03:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:03:22,384 INFO L87 Difference]: Start difference. First operand 2097 states and 2628 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 05:03:42,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:03:42,162 INFO L93 Difference]: Finished difference Result 3819 states and 5006 transitions. [2022-01-10 05:03:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:03:42,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-01-10 05:03:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:03:42,169 INFO L225 Difference]: With dead ends: 3819 [2022-01-10 05:03:42,169 INFO L226 Difference]: Without dead ends: 2650 [2022-01-10 05:03:42,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 05:03:42,170 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 152 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-01-10 05:03:42,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 37 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2022-01-10 05:03:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2022-01-10 05:03:42,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2650. [2022-01-10 05:03:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2649 states have (on average 1.2782181955454888) internal successors, (3386), 2649 states have internal predecessors, (3386), 0 states have call successors, (0), 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 05:03:42,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3386 transitions. [2022-01-10 05:03:42,213 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3386 transitions. Word has length 233 [2022-01-10 05:03:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:03:42,213 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 3386 transitions. [2022-01-10 05:03:42,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 05:03:42,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3386 transitions. [2022-01-10 05:03:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-01-10 05:03:42,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:03:42,216 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 05:03:42,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 05:03:42,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:03:42,426 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:03:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:03:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -533330184, now seen corresponding path program 1 times [2022-01-10 05:03:42,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:03:42,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980361433] [2022-01-10 05:03:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:03:42,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:03:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:03:42,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:03:42,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 05:03:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:03:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 05:03:42,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:03:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 78 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:03:44,868 INFO L328 TraceCheckSpWp]: Computing backward predicates...