/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/Problem16_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:28:39,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:28:39,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:28:39,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 05:28:39,608 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 05:28:39,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:28:39,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:28:39,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:28:39,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:28:39,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:28:39,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:28:39,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:28:39,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:28:39,632 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:28:39,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:28:39,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:28:39,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:28:39,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:28:39,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:28:39,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:28:39,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:28:39,633 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:28:39,634 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:28:39,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:28:39,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:28:39,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:28:39,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:28:39,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:28:39,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:28:39,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:28:39,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:28:39,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:28:39,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:28:39,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:28:39,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:28:39,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:28:39,863 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:28:39,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label33.c [2022-01-10 05:28:39,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7662388/379bb9eda6f04ae3a0c5777abd84306b/FLAG4a9353c49 [2022-01-10 05:28:40,480 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:28:40,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label33.c [2022-01-10 05:28:40,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7662388/379bb9eda6f04ae3a0c5777abd84306b/FLAG4a9353c49 [2022-01-10 05:28:40,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7662388/379bb9eda6f04ae3a0c5777abd84306b [2022-01-10 05:28:40,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:28:40,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:28:40,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:28:40,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:28:40,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:28:40,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:40" (1/1) ... [2022-01-10 05:28:40,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c49fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:40, skipping insertion in model container [2022-01-10 05:28:40,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:40" (1/1) ... [2022-01-10 05:28:40,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:28:40,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:28:41,189 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/Problem16_label33.c[3017,3030] [2022-01-10 05:28:41,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:28:41,570 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:28:41,596 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/Problem16_label33.c[3017,3030] [2022-01-10 05:28:41,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:28:41,763 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:28:41,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41 WrapperNode [2022-01-10 05:28:41,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:28:41,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:28:41,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:28:41,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:28:41,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,883 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1765 [2022-01-10 05:28:41,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:28:41,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:28:41,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:28:41,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:28:41,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:41,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:28:41,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:28:41,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:28:41,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:28:41,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (1/1) ... [2022-01-10 05:28:42,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:28:42,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:28:42,025 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 05:28:42,032 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 05:28:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:28:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:28:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:28:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:28:42,124 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:28:42,126 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:28:48,782 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:28:48,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:28:48,794 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:28:48,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:48 BoogieIcfgContainer [2022-01-10 05:28:48,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:28:48,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:28:48,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:28:48,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:28:48,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:28:40" (1/3) ... [2022-01-10 05:28:48,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13621cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:48, skipping insertion in model container [2022-01-10 05:28:48,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:41" (2/3) ... [2022-01-10 05:28:48,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13621cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:48, skipping insertion in model container [2022-01-10 05:28:48,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:48" (3/3) ... [2022-01-10 05:28:48,807 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label33.c [2022-01-10 05:28:48,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:28:48,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:28:48,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:28:48,873 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 05:28:48,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:28:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 05:28:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 05:28:48,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:28:48,901 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] [2022-01-10 05:28:48,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:28:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:28:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2022-01-10 05:28:48,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:28:48,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445557537] [2022-01-10 05:28:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:28:48,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:28:48,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:28:48,923 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 05:28:48,931 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 05:28:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:28:48,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:28:48,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:28:49,135 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 05:28:49,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:28:49,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:28:49,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445557537] [2022-01-10 05:28:49,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445557537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:28:49,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:28:49,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:28:49,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316036881] [2022-01-10 05:28:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:28:49,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:28:49,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:28:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:28:49,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:28:49,173 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 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 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 05:28:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:28:57,247 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2022-01-10 05:28:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:28:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2022-01-10 05:28:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:28:57,263 INFO L225 Difference]: With dead ends: 1122 [2022-01-10 05:28:57,263 INFO L226 Difference]: Without dead ends: 662 [2022-01-10 05:28:57,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 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 05:28:57,273 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 318 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:28:57,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 290 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-01-10 05:28:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-01-10 05:28:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-01-10 05:28:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.4826021180030258) internal successors, (980), 661 states have internal predecessors, (980), 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 05:28:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 980 transitions. [2022-01-10 05:28:57,359 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 980 transitions. Word has length 27 [2022-01-10 05:28:57,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:28:57,363 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 980 transitions. [2022-01-10 05:28:57,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 05:28:57,363 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 980 transitions. [2022-01-10 05:28:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 05:28:57,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:28:57,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:57,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 05:28:57,571 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 05:28:57,572 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:28:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:28:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1093906064, now seen corresponding path program 1 times [2022-01-10 05:28:57,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:28:57,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330606056] [2022-01-10 05:28:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:28:57,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:28:57,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:28:57,577 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 05:28:57,579 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 05:28:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:28:57,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:28:57,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:28:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:28:57,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:28:57,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:28:57,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330606056] [2022-01-10 05:28:57,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330606056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:28:57,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:28:57,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:28:57,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347935706] [2022-01-10 05:28:57,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:28:57,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:28:57,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:28:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:28:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:28:57,919 INFO L87 Difference]: Start difference. First operand 662 states and 980 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:29:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:29:03,289 INFO L93 Difference]: Finished difference Result 1651 states and 2341 transitions. [2022-01-10 05:29:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:29:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 05:29:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:29:03,294 INFO L225 Difference]: With dead ends: 1651 [2022-01-10 05:29:03,294 INFO L226 Difference]: Without dead ends: 991 [2022-01-10 05:29:03,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 05:29:03,298 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 260 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:29:03,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 249 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 05:29:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-01-10 05:29:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-01-10 05:29:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3525252525252525) internal successors, (1339), 990 states have internal predecessors, (1339), 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 05:29:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1339 transitions. [2022-01-10 05:29:03,326 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1339 transitions. Word has length 99 [2022-01-10 05:29:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:29:03,327 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1339 transitions. [2022-01-10 05:29:03,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 05:29:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1339 transitions. [2022-01-10 05:29:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 05:29:03,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:03,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:29:03,341 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 05:29:03,540 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 05:29:03,541 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash -343975725, now seen corresponding path program 1 times [2022-01-10 05:29:03,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:03,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087461176] [2022-01-10 05:29:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:03,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:03,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:03,544 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 05:29:03,546 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 05:29:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:03,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:29:03,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:29:03,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:29:03,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:03,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087461176] [2022-01-10 05:29:03,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087461176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:29:03,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:29:03,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:29:03,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752529557] [2022-01-10 05:29:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:29:03,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:29:03,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:29:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:29:03,787 INFO L87 Difference]: Start difference. First operand 991 states and 1339 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 05:29:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:29:11,933 INFO L93 Difference]: Finished difference Result 1980 states and 2911 transitions. [2022-01-10 05:29:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:29:11,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-01-10 05:29:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:29:11,938 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 05:29:11,939 INFO L226 Difference]: Without dead ends: 1320 [2022-01-10 05:29:11,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 05:29:11,941 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 357 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:29:11,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 539 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-01-10 05:29:11,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-10 05:29:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-01-10 05:29:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3146322971948445) internal successors, (1734), 1319 states have internal predecessors, (1734), 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 05:29:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1734 transitions. [2022-01-10 05:29:11,965 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1734 transitions. Word has length 114 [2022-01-10 05:29:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:29:11,965 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1734 transitions. [2022-01-10 05:29:11,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 05:29:11,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1734 transitions. [2022-01-10 05:29:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 05:29:11,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:11,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:29:11,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 05:29:12,177 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 05:29:12,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1208563630, now seen corresponding path program 1 times [2022-01-10 05:29:12,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:12,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702937931] [2022-01-10 05:29:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:12,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:12,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:12,182 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 05:29:12,184 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 05:29:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:12,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:29:12,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 05:29:12,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:29:12,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:12,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702937931] [2022-01-10 05:29:12,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702937931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:29:12,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:29:12,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 05:29:12,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884947421] [2022-01-10 05:29:12,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:29:12,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:29:12,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:29:12,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:29:12,626 INFO L87 Difference]: Start difference. First operand 1320 states and 1734 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 05:29:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:29:19,951 INFO L93 Difference]: Finished difference Result 3625 states and 4838 transitions. [2022-01-10 05:29:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:29:19,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 152 [2022-01-10 05:29:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:29:19,961 INFO L225 Difference]: With dead ends: 3625 [2022-01-10 05:29:19,961 INFO L226 Difference]: Without dead ends: 2636 [2022-01-10 05:29:19,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 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 05:29:19,964 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 225 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-01-10 05:29:19,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 241 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-01-10 05:29:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-01-10 05:29:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2022-01-10 05:29:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.2030360531309299) internal successors, (3170), 2635 states have internal predecessors, (3170), 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 05:29:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3170 transitions. [2022-01-10 05:29:20,004 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3170 transitions. Word has length 152 [2022-01-10 05:29:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:29:20,005 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3170 transitions. [2022-01-10 05:29:20,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 05:29:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3170 transitions. [2022-01-10 05:29:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-01-10 05:29:20,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:29:20,010 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:29:20,028 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 05:29:20,218 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 05:29:20,219 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:29:20,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:29:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 181416467, now seen corresponding path program 1 times [2022-01-10 05:29:20,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:29:20,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024264685] [2022-01-10 05:29:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:29:20,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:29:20,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:29:20,222 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 05:29:20,223 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 05:29:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:29:20,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 05:29:20,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:29:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 214 proven. 56 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 05:29:21,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:29:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 214 proven. 56 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 05:29:24,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:29:24,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024264685] [2022-01-10 05:29:24,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024264685] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:29:24,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:29:24,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-01-10 05:29:24,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757727292] [2022-01-10 05:29:24,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:29:24,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 05:29:24,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:29:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 05:29:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 05:29:24,878 INFO L87 Difference]: Start difference. First operand 2636 states and 3170 transitions. Second operand has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 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 05:29:34,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:29:36,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 05:29:40,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []