/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/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:49:24,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:49:24,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:49:24,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 06:49:24,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:49:24,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:49:24,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:49:24,780 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 06:49:24,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:49:24,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:49:24,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:49:24,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:49:24,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:49:24,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:49:24,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:49:24,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:49:24,809 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:49:24,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:49:24,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:49:24,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:49:24,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:49:24,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:49:24,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:49:24,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:49:24,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:49:24,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:49:24,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:49:24,812 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:49:24,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:49:24,812 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:49:24,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:49:24,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:49:24,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:49:24,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:49:25,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:49:25,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:49:25,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:49:25,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:49:25,034 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:49:25,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2022-01-10 06:49:25,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb1a0aaf/5771f4d6085749be9b9c66bef4894c8b/FLAG4a53301b0 [2022-01-10 06:49:25,460 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:49:25,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2022-01-10 06:49:25,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb1a0aaf/5771f4d6085749be9b9c66bef4894c8b/FLAG4a53301b0 [2022-01-10 06:49:25,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb1a0aaf/5771f4d6085749be9b9c66bef4894c8b [2022-01-10 06:49:25,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:49:25,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:49:25,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:49:25,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:49:25,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:49:25,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:49:25" (1/1) ... [2022-01-10 06:49:25,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454ae84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:25, skipping insertion in model container [2022-01-10 06:49:25,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:49:25" (1/1) ... [2022-01-10 06:49:25,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:49:25,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:49:26,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2022-01-10 06:49:26,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:49:26,097 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:49:26,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2022-01-10 06:49:26,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:49:26,164 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:49:26,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26 WrapperNode [2022-01-10 06:49:26,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:49:26,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:49:26,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:49:26,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:49:26,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,210 INFO L137 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2022-01-10 06:49:26,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:49:26,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:49:26,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:49:26,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:49:26,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:49:26,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:49:26,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:49:26,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:49:26,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (1/1) ... [2022-01-10 06:49:26,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:49:26,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:49:26,276 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 06:49:26,278 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 06:49:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:49:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:49:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:49:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:49:26,357 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:49:26,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:49:26,614 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:49:26,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:49:26,621 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:49:26,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:49:26 BoogieIcfgContainer [2022-01-10 06:49:26,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:49:26,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:49:26,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:49:26,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:49:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:49:25" (1/3) ... [2022-01-10 06:49:26,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8efdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:49:26, skipping insertion in model container [2022-01-10 06:49:26,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:26" (2/3) ... [2022-01-10 06:49:26,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8efdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:49:26, skipping insertion in model container [2022-01-10 06:49:26,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:49:26" (3/3) ... [2022-01-10 06:49:26,630 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2022-01-10 06:49:26,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:49:26,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:49:26,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:49:26,666 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 06:49:26,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:49:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.6753246753246753) internal successors, (129), 78 states have internal predecessors, (129), 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 06:49:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 06:49:26,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:26,680 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] [2022-01-10 06:49:26,680 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 233700331, now seen corresponding path program 1 times [2022-01-10 06:49:26,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:26,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800646789] [2022-01-10 06:49:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:26,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:26,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:26,693 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 06:49:26,694 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 06:49:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:26,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:49:26,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:26,840 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 06:49:26,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:26,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:26,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800646789] [2022-01-10 06:49:26,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800646789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:26,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:26,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:26,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736833010] [2022-01-10 06:49:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:26,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:49:26,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:26,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:49:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:26,864 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.6753246753246753) internal successors, (129), 78 states have internal predecessors, (129), 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 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 06:49:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:26,927 INFO L93 Difference]: Finished difference Result 191 states and 307 transitions. [2022-01-10 06:49:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:49:26,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2022-01-10 06:49:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:26,934 INFO L225 Difference]: With dead ends: 191 [2022-01-10 06:49:26,934 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 06:49:26,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:49:26,938 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 84 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:26,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 465 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 06:49:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2022-01-10 06:49:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 74 states have internal predecessors, (105), 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 06:49:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2022-01-10 06:49:26,961 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 25 [2022-01-10 06:49:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:26,961 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2022-01-10 06:49:26,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 06:49:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2022-01-10 06:49:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 06:49:26,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:26,963 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] [2022-01-10 06:49:26,969 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 06:49:27,167 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 06:49:27,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash 182027041, now seen corresponding path program 1 times [2022-01-10 06:49:27,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:27,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8627371] [2022-01-10 06:49:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:27,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:27,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:27,170 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 06:49:27,172 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 06:49:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:27,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:27,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:27,352 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 06:49:27,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:27,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:27,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8627371] [2022-01-10 06:49:27,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8627371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:27,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:27,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:27,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349669662] [2022-01-10 06:49:27,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:27,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:27,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:27,361 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 06:49:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:27,389 INFO L93 Difference]: Finished difference Result 167 states and 249 transitions. [2022-01-10 06:49:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:27,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2022-01-10 06:49:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:27,394 INFO L225 Difference]: With dead ends: 167 [2022-01-10 06:49:27,394 INFO L226 Difference]: Without dead ends: 115 [2022-01-10 06:49:27,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 06:49:27,396 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:27,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-10 06:49:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2022-01-10 06:49:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4732142857142858) internal successors, (165), 112 states have internal predecessors, (165), 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 06:49:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2022-01-10 06:49:27,403 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 41 [2022-01-10 06:49:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:27,404 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2022-01-10 06:49:27,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 06:49:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2022-01-10 06:49:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 06:49:27,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:27,405 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] [2022-01-10 06:49:27,415 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 06:49:27,607 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 06:49:27,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 54990345, now seen corresponding path program 1 times [2022-01-10 06:49:27,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:27,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853113081] [2022-01-10 06:49:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:27,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:27,611 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 06:49:27,612 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 06:49:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:27,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:27,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:27,744 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 06:49:27,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:27,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:27,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853113081] [2022-01-10 06:49:27,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853113081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:27,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:27,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:27,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651509429] [2022-01-10 06:49:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:27,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:27,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:27,746 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 06:49:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:27,758 INFO L93 Difference]: Finished difference Result 269 states and 409 transitions. [2022-01-10 06:49:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:27,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2022-01-10 06:49:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:27,760 INFO L225 Difference]: With dead ends: 269 [2022-01-10 06:49:27,760 INFO L226 Difference]: Without dead ends: 179 [2022-01-10 06:49:27,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 06:49:27,761 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 65 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:27,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-10 06:49:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2022-01-10 06:49:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.5) internal successors, (264), 176 states have internal predecessors, (264), 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 06:49:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2022-01-10 06:49:27,771 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 42 [2022-01-10 06:49:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:27,772 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2022-01-10 06:49:27,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 06:49:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2022-01-10 06:49:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 06:49:27,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:27,773 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] [2022-01-10 06:49:27,781 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 06:49:27,979 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 06:49:27,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1508061361, now seen corresponding path program 1 times [2022-01-10 06:49:27,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:27,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138826878] [2022-01-10 06:49:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:27,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:27,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:27,982 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 06:49:27,984 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 06:49:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:28,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:28,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:28,115 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 06:49:28,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:28,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138826878] [2022-01-10 06:49:28,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138826878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:28,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:28,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:28,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257841257] [2022-01-10 06:49:28,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:28,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:28,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:28,118 INFO L87 Difference]: Start difference. First operand 177 states and 264 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 06:49:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:28,131 INFO L93 Difference]: Finished difference Result 437 states and 666 transitions. [2022-01-10 06:49:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:28,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-01-10 06:49:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:28,134 INFO L225 Difference]: With dead ends: 437 [2022-01-10 06:49:28,134 INFO L226 Difference]: Without dead ends: 283 [2022-01-10 06:49:28,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 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 06:49:28,141 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 60 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:28,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 218 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-10 06:49:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2022-01-10 06:49:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.5) internal successors, (420), 280 states have internal predecessors, (420), 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 06:49:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 420 transitions. [2022-01-10 06:49:28,158 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 420 transitions. Word has length 43 [2022-01-10 06:49:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:28,159 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 420 transitions. [2022-01-10 06:49:28,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 06:49:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 420 transitions. [2022-01-10 06:49:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 06:49:28,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:28,160 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] [2022-01-10 06:49:28,171 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 06:49:28,366 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 06:49:28,367 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:28,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:28,367 INFO L85 PathProgramCache]: Analyzing trace with hash -922713191, now seen corresponding path program 1 times [2022-01-10 06:49:28,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:28,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988767096] [2022-01-10 06:49:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:28,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:28,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:28,369 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 06:49:28,369 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 06:49:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:28,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:49:28,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:28,533 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 06:49:28,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:28,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:28,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988767096] [2022-01-10 06:49:28,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988767096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:28,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:28,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:28,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298292034] [2022-01-10 06:49:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:28,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:49:28,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:49:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:28,544 INFO L87 Difference]: Start difference. First operand 281 states and 420 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 06:49:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:28,601 INFO L93 Difference]: Finished difference Result 971 states and 1467 transitions. [2022-01-10 06:49:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:49:28,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2022-01-10 06:49:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:28,604 INFO L225 Difference]: With dead ends: 971 [2022-01-10 06:49:28,604 INFO L226 Difference]: Without dead ends: 713 [2022-01-10 06:49:28,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:28,606 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 289 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:28,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 293 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-01-10 06:49:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 709. [2022-01-10 06:49:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.497175141242938) internal successors, (1060), 708 states have internal predecessors, (1060), 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 06:49:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1060 transitions. [2022-01-10 06:49:28,640 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1060 transitions. Word has length 44 [2022-01-10 06:49:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:28,641 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 1060 transitions. [2022-01-10 06:49:28,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 06:49:28,641 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1060 transitions. [2022-01-10 06:49:28,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 06:49:28,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:28,645 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] [2022-01-10 06:49:28,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 06:49:28,852 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 06:49:28,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:28,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:28,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2131571990, now seen corresponding path program 1 times [2022-01-10 06:49:28,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:28,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323329918] [2022-01-10 06:49:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:28,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:28,854 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 06:49:28,856 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 06:49:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:28,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:49:28,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:29,167 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 06:49:29,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:29,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:29,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323329918] [2022-01-10 06:49:29,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323329918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:29,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:29,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:29,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87975507] [2022-01-10 06:49:29,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:29,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:49:29,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:29,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:49:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:29,169 INFO L87 Difference]: Start difference. First operand 709 states and 1060 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 06:49:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:29,263 INFO L93 Difference]: Finished difference Result 2801 states and 4220 transitions. [2022-01-10 06:49:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:49:29,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2022-01-10 06:49:29,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:29,273 INFO L225 Difference]: With dead ends: 2801 [2022-01-10 06:49:29,273 INFO L226 Difference]: Without dead ends: 2115 [2022-01-10 06:49:29,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:29,275 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 344 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:29,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 403 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-01-10 06:49:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1393. [2022-01-10 06:49:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1392 states have (on average 1.471264367816092) internal successors, (2048), 1392 states have internal predecessors, (2048), 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 06:49:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2048 transitions. [2022-01-10 06:49:29,321 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2048 transitions. Word has length 45 [2022-01-10 06:49:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:29,322 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 2048 transitions. [2022-01-10 06:49:29,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 06:49:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2048 transitions. [2022-01-10 06:49:29,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 06:49:29,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:29,324 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] [2022-01-10 06:49:29,335 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 06:49:29,531 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 06:49:29,531 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:29,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1270898830, now seen corresponding path program 1 times [2022-01-10 06:49:29,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:29,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138651081] [2022-01-10 06:49:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:29,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:29,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:29,533 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 06:49:29,534 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 06:49:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:29,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:49:29,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:29,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:29,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:29,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138651081] [2022-01-10 06:49:29,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138651081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:29,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:29,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005792188] [2022-01-10 06:49:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:29,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:49:29,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:49:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:29,661 INFO L87 Difference]: Start difference. First operand 1393 states and 2048 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:49:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:29,759 INFO L93 Difference]: Finished difference Result 2955 states and 4265 transitions. [2022-01-10 06:49:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:49:29,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2022-01-10 06:49:29,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:29,768 INFO L225 Difference]: With dead ends: 2955 [2022-01-10 06:49:29,768 INFO L226 Difference]: Without dead ends: 2953 [2022-01-10 06:49:29,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:49:29,769 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 225 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:29,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 455 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-01-10 06:49:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1537. [2022-01-10 06:49:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1536 states have (on average 1.4270833333333333) internal successors, (2192), 1536 states have internal predecessors, (2192), 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 06:49:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2192 transitions. [2022-01-10 06:49:29,825 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2192 transitions. Word has length 46 [2022-01-10 06:49:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:29,825 INFO L470 AbstractCegarLoop]: Abstraction has 1537 states and 2192 transitions. [2022-01-10 06:49:29,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:49:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2192 transitions. [2022-01-10 06:49:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 06:49:29,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:29,829 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] [2022-01-10 06:49:29,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-01-10 06:49:30,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:30,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:30,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash 795736558, now seen corresponding path program 1 times [2022-01-10 06:49:30,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:30,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335558075] [2022-01-10 06:49:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:30,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:30,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:30,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:30,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:49:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:30,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:30,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:30,150 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 06:49:30,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:30,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:30,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335558075] [2022-01-10 06:49:30,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335558075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:30,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:30,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:30,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117097927] [2022-01-10 06:49:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:30,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:30,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:30,152 INFO L87 Difference]: Start difference. First operand 1537 states and 2192 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:49:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:30,214 INFO L93 Difference]: Finished difference Result 3651 states and 5220 transitions. [2022-01-10 06:49:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2022-01-10 06:49:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:30,220 INFO L225 Difference]: With dead ends: 3651 [2022-01-10 06:49:30,221 INFO L226 Difference]: Without dead ends: 2137 [2022-01-10 06:49:30,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 06:49:30,222 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:30,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2022-01-10 06:49:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2135. [2022-01-10 06:49:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2134 states have (on average 1.4198687910028116) internal successors, (3030), 2134 states have internal predecessors, (3030), 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 06:49:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3030 transitions. [2022-01-10 06:49:30,287 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3030 transitions. Word has length 47 [2022-01-10 06:49:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:30,288 INFO L470 AbstractCegarLoop]: Abstraction has 2135 states and 3030 transitions. [2022-01-10 06:49:30,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:49:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3030 transitions. [2022-01-10 06:49:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:49:30,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:30,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:30,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:30,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:30,497 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:30,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1282796535, now seen corresponding path program 1 times [2022-01-10 06:49:30,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:30,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972243139] [2022-01-10 06:49:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:30,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:30,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:30,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:30,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:49:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:30,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:49:30,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:31,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:31,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:31,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972243139] [2022-01-10 06:49:31,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972243139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:31,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:31,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:49:31,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536451841] [2022-01-10 06:49:31,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:31,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:49:31,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:49:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:49:31,575 INFO L87 Difference]: Start difference. First operand 2135 states and 3030 transitions. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 15 states have internal predecessors, (123), 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 06:49:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:31,688 INFO L93 Difference]: Finished difference Result 3740 states and 5333 transitions. [2022-01-10 06:49:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:49:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 15 states have internal predecessors, (123), 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 66 [2022-01-10 06:49:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:31,695 INFO L225 Difference]: With dead ends: 3740 [2022-01-10 06:49:31,695 INFO L226 Difference]: Without dead ends: 2202 [2022-01-10 06:49:31,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:49:31,697 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 118 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:31,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 862 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 81 Unchecked, 0.0s Time] [2022-01-10 06:49:31,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-01-10 06:49:31,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2177. [2022-01-10 06:49:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2176 states have (on average 1.4191176470588236) internal successors, (3088), 2176 states have internal predecessors, (3088), 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 06:49:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3088 transitions. [2022-01-10 06:49:31,760 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3088 transitions. Word has length 66 [2022-01-10 06:49:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:31,760 INFO L470 AbstractCegarLoop]: Abstraction has 2177 states and 3088 transitions. [2022-01-10 06:49:31,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 15 states have internal predecessors, (123), 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 06:49:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3088 transitions. [2022-01-10 06:49:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:49:31,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:31,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:31,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:31,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:31,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2126802037, now seen corresponding path program 1 times [2022-01-10 06:49:31,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:31,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464214623] [2022-01-10 06:49:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:31,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:31,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:31,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:31,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:49:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:32,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:32,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 06:49:32,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:32,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:32,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464214623] [2022-01-10 06:49:32,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464214623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:32,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:32,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:32,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908521658] [2022-01-10 06:49:32,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:32,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:49:32,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:49:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:32,230 INFO L87 Difference]: Start difference. First operand 2177 states and 3088 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 06:49:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:32,304 INFO L93 Difference]: Finished difference Result 3718 states and 5291 transitions. [2022-01-10 06:49:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:49:32,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 66 [2022-01-10 06:49:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:32,311 INFO L225 Difference]: With dead ends: 3718 [2022-01-10 06:49:32,311 INFO L226 Difference]: Without dead ends: 2180 [2022-01-10 06:49:32,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:49:32,313 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 37 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:32,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 193 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-01-10 06:49:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2022-01-10 06:49:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2177. [2022-01-10 06:49:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2176 states have (on average 1.4186580882352942) internal successors, (3087), 2176 states have internal predecessors, (3087), 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 06:49:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3087 transitions. [2022-01-10 06:49:32,376 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3087 transitions. Word has length 66 [2022-01-10 06:49:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:32,376 INFO L470 AbstractCegarLoop]: Abstraction has 2177 states and 3087 transitions. [2022-01-10 06:49:32,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 06:49:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3087 transitions. [2022-01-10 06:49:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:49:32,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:32,377 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:32,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:32,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:32,584 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1236594397, now seen corresponding path program 1 times [2022-01-10 06:49:32,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:32,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92576496] [2022-01-10 06:49:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:32,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:32,586 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:32,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:49:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:32,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:49:32,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:33,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:33,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:33,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92576496] [2022-01-10 06:49:33,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92576496] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:33,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:33,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:49:33,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756469249] [2022-01-10 06:49:33,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:33,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:49:33,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:49:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:49:33,356 INFO L87 Difference]: Start difference. First operand 2177 states and 3087 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 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 06:49:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:33,624 INFO L93 Difference]: Finished difference Result 4523 states and 6396 transitions. [2022-01-10 06:49:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:49:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 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 66 [2022-01-10 06:49:33,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:33,635 INFO L225 Difference]: With dead ends: 4523 [2022-01-10 06:49:33,635 INFO L226 Difference]: Without dead ends: 3985 [2022-01-10 06:49:33,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-01-10 06:49:33,639 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 168 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:33,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 1405 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 228 Unchecked, 0.1s Time] [2022-01-10 06:49:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2022-01-10 06:49:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3607. [2022-01-10 06:49:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3606 states have (on average 1.40904048807543) internal successors, (5081), 3606 states have internal predecessors, (5081), 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 06:49:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 5081 transitions. [2022-01-10 06:49:33,751 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 5081 transitions. Word has length 66 [2022-01-10 06:49:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:33,752 INFO L470 AbstractCegarLoop]: Abstraction has 3607 states and 5081 transitions. [2022-01-10 06:49:33,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 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 06:49:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 5081 transitions. [2022-01-10 06:49:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:49:33,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:33,754 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:33,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:33,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:33,961 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1213962143, now seen corresponding path program 1 times [2022-01-10 06:49:33,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:33,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252654075] [2022-01-10 06:49:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:33,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:33,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:33,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:49:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:34,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:34,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:49:34,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:34,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:34,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252654075] [2022-01-10 06:49:34,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252654075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:34,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:34,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:34,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636347359] [2022-01-10 06:49:34,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:34,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:49:34,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:34,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:49:34,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:34,275 INFO L87 Difference]: Start difference. First operand 3607 states and 5081 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 06:49:34,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:34,352 INFO L93 Difference]: Finished difference Result 4410 states and 6224 transitions. [2022-01-10 06:49:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:49:34,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 66 [2022-01-10 06:49:34,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:34,361 INFO L225 Difference]: With dead ends: 4410 [2022-01-10 06:49:34,361 INFO L226 Difference]: Without dead ends: 3616 [2022-01-10 06:49:34,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:49:34,363 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 44 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:34,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 193 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-01-10 06:49:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2022-01-10 06:49:34,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3613. [2022-01-10 06:49:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.4086378737541527) internal successors, (5088), 3612 states have internal predecessors, (5088), 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 06:49:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 5088 transitions. [2022-01-10 06:49:34,452 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 5088 transitions. Word has length 66 [2022-01-10 06:49:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:34,452 INFO L470 AbstractCegarLoop]: Abstraction has 3613 states and 5088 transitions. [2022-01-10 06:49:34,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 06:49:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 5088 transitions. [2022-01-10 06:49:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:49:34,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:34,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:34,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:34,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:34,664 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash -971844959, now seen corresponding path program 1 times [2022-01-10 06:49:34,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:34,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344754321] [2022-01-10 06:49:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:34,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:34,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:34,666 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:34,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:49:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:34,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:34,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:49:34,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:34,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:34,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344754321] [2022-01-10 06:49:34,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344754321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:34,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:34,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:34,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032994340] [2022-01-10 06:49:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:34,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:49:34,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:49:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:34,908 INFO L87 Difference]: Start difference. First operand 3613 states and 5088 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:49:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:35,033 INFO L93 Difference]: Finished difference Result 7154 states and 10089 transitions. [2022-01-10 06:49:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:49:35,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 06:49:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:35,043 INFO L225 Difference]: With dead ends: 7154 [2022-01-10 06:49:35,044 INFO L226 Difference]: Without dead ends: 3614 [2022-01-10 06:49:35,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:49:35,048 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:35,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 184 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 10 Unchecked, 0.0s Time] [2022-01-10 06:49:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-01-10 06:49:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3614. [2022-01-10 06:49:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3613 states have (on average 1.4085247716579021) internal successors, (5089), 3613 states have internal predecessors, (5089), 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 06:49:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5089 transitions. [2022-01-10 06:49:35,144 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5089 transitions. Word has length 66 [2022-01-10 06:49:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:35,144 INFO L470 AbstractCegarLoop]: Abstraction has 3614 states and 5089 transitions. [2022-01-10 06:49:35,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:49:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5089 transitions. [2022-01-10 06:49:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:49:35,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:35,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:35,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:35,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:35,352 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash 399962339, now seen corresponding path program 1 times [2022-01-10 06:49:35,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:35,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917660642] [2022-01-10 06:49:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:35,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:35,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:35,354 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:35,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:49:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:35,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:49:35,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:35,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:36,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:36,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917660642] [2022-01-10 06:49:36,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917660642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:36,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:36,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:49:36,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518345700] [2022-01-10 06:49:36,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:36,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:49:36,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:49:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:49:36,184 INFO L87 Difference]: Start difference. First operand 3614 states and 5089 transitions. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 15 states have internal predecessors, (119), 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 06:49:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:36,355 INFO L93 Difference]: Finished difference Result 6291 states and 8900 transitions. [2022-01-10 06:49:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:49:36,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 15 states have internal predecessors, (119), 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 66 [2022-01-10 06:49:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:36,365 INFO L225 Difference]: With dead ends: 6291 [2022-01-10 06:49:36,366 INFO L226 Difference]: Without dead ends: 3761 [2022-01-10 06:49:36,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:49:36,369 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 160 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:36,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1185 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 163 Unchecked, 0.0s Time] [2022-01-10 06:49:36,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2022-01-10 06:49:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3651. [2022-01-10 06:49:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 3650 states have (on average 1.4076712328767123) internal successors, (5138), 3650 states have internal predecessors, (5138), 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 06:49:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5138 transitions. [2022-01-10 06:49:36,475 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5138 transitions. Word has length 66 [2022-01-10 06:49:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:36,475 INFO L470 AbstractCegarLoop]: Abstraction has 3651 states and 5138 transitions. [2022-01-10 06:49:36,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 15 states have internal predecessors, (119), 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 06:49:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5138 transitions. [2022-01-10 06:49:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:49:36,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:36,478 INFO L514 BasicCegarLoop]: trace histogram [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 06:49:36,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:36,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:36,684 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash -755837845, now seen corresponding path program 1 times [2022-01-10 06:49:36,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230328026] [2022-01-10 06:49:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:36,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:36,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:36,686 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:36,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:49:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:36,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:36,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:36,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:36,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:36,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230328026] [2022-01-10 06:49:36,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230328026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:36,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:36,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-10 06:49:36,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082991313] [2022-01-10 06:49:36,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:36,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:49:36,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:36,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:49:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:49:36,965 INFO L87 Difference]: Start difference. First operand 3651 states and 5138 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 06:49:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:37,209 INFO L93 Difference]: Finished difference Result 8595 states and 11971 transitions. [2022-01-10 06:49:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:49:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 67 [2022-01-10 06:49:37,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:37,219 INFO L225 Difference]: With dead ends: 8595 [2022-01-10 06:49:37,220 INFO L226 Difference]: Without dead ends: 6050 [2022-01-10 06:49:37,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:49:37,224 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 816 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:37,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 333 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:49:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-01-10 06:49:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 3884. [2022-01-10 06:49:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3883 states have (on average 1.3819211949523564) internal successors, (5366), 3883 states have internal predecessors, (5366), 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 06:49:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5366 transitions. [2022-01-10 06:49:37,372 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5366 transitions. Word has length 67 [2022-01-10 06:49:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:37,373 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 5366 transitions. [2022-01-10 06:49:37,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 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 06:49:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5366 transitions. [2022-01-10 06:49:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:49:37,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:37,375 INFO L514 BasicCegarLoop]: trace histogram [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 06:49:37,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:37,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:37,581 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:37,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:37,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1622281697, now seen corresponding path program 1 times [2022-01-10 06:49:37,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:37,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830293275] [2022-01-10 06:49:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:37,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:37,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:37,583 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:37,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:49:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:37,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:37,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:37,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:37,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830293275] [2022-01-10 06:49:37,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830293275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:37,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:37,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:37,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516155405] [2022-01-10 06:49:37,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:37,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:37,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:37,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:37,694 INFO L87 Difference]: Start difference. First operand 3884 states and 5366 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:37,796 INFO L93 Difference]: Finished difference Result 7670 states and 10612 transitions. [2022-01-10 06:49:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:37,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-10 06:49:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:37,803 INFO L225 Difference]: With dead ends: 7670 [2022-01-10 06:49:37,803 INFO L226 Difference]: Without dead ends: 3886 [2022-01-10 06:49:37,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 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 06:49:37,808 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 52 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:37,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 223 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2022-01-10 06:49:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3884. [2022-01-10 06:49:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3883 states have (on average 1.367756889003348) internal successors, (5311), 3883 states have internal predecessors, (5311), 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 06:49:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5311 transitions. [2022-01-10 06:49:37,916 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5311 transitions. Word has length 67 [2022-01-10 06:49:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:37,916 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 5311 transitions. [2022-01-10 06:49:37,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5311 transitions. [2022-01-10 06:49:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:49:37,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:37,918 INFO L514 BasicCegarLoop]: trace histogram [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 06:49:37,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:38,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:38,125 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1095639557, now seen corresponding path program 1 times [2022-01-10 06:49:38,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:38,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720023061] [2022-01-10 06:49:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:38,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:38,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:38,127 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:38,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:49:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:38,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:38,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:38,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:38,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:38,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720023061] [2022-01-10 06:49:38,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720023061] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:38,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:38,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-10 06:49:38,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460972801] [2022-01-10 06:49:38,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:38,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:49:38,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:38,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:49:38,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:49:38,419 INFO L87 Difference]: Start difference. First operand 3884 states and 5311 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 06:49:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:38,730 INFO L93 Difference]: Finished difference Result 12266 states and 16724 transitions. [2022-01-10 06:49:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:49:38,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 67 [2022-01-10 06:49:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:38,743 INFO L225 Difference]: With dead ends: 12266 [2022-01-10 06:49:38,744 INFO L226 Difference]: Without dead ends: 8626 [2022-01-10 06:49:38,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:49:38,749 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 914 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:38,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 394 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:49:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2022-01-10 06:49:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 4668. [2022-01-10 06:49:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 4667 states have (on average 1.3548317977287336) internal successors, (6323), 4667 states have internal predecessors, (6323), 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 06:49:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 6323 transitions. [2022-01-10 06:49:38,935 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 6323 transitions. Word has length 67 [2022-01-10 06:49:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:38,936 INFO L470 AbstractCegarLoop]: Abstraction has 4668 states and 6323 transitions. [2022-01-10 06:49:38,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 06:49:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 6323 transitions. [2022-01-10 06:49:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:49:38,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:38,937 INFO L514 BasicCegarLoop]: trace histogram [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 06:49:38,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:39,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:39,146 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:39,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1374408821, now seen corresponding path program 1 times [2022-01-10 06:49:39,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:39,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791865464] [2022-01-10 06:49:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:39,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:39,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:39,148 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:39,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:49:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:49:39,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:49:39,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:49:39,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:39,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791865464] [2022-01-10 06:49:39,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791865464] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:39,449 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:39,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:49:39,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805444492] [2022-01-10 06:49:39,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:39,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:49:39,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:49:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:39,451 INFO L87 Difference]: Start difference. First operand 4668 states and 6323 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 06:49:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:39,725 INFO L93 Difference]: Finished difference Result 13358 states and 18373 transitions. [2022-01-10 06:49:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:49:39,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 67 [2022-01-10 06:49:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:39,740 INFO L225 Difference]: With dead ends: 13358 [2022-01-10 06:49:39,740 INFO L226 Difference]: Without dead ends: 10242 [2022-01-10 06:49:39,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:39,746 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 458 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:39,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 493 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-01-10 06:49:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states. [2022-01-10 06:49:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10234. [2022-01-10 06:49:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10234 states, 10233 states have (on average 1.362259356982312) internal successors, (13940), 10233 states have internal predecessors, (13940), 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 06:49:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10234 states to 10234 states and 13940 transitions. [2022-01-10 06:49:40,126 INFO L78 Accepts]: Start accepts. Automaton has 10234 states and 13940 transitions. Word has length 67 [2022-01-10 06:49:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:40,126 INFO L470 AbstractCegarLoop]: Abstraction has 10234 states and 13940 transitions. [2022-01-10 06:49:40,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 06:49:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 10234 states and 13940 transitions. [2022-01-10 06:49:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:49:40,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:40,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:40,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:40,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:40,334 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash 129974557, now seen corresponding path program 1 times [2022-01-10 06:49:40,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:40,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297173832] [2022-01-10 06:49:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:40,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:40,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:40,336 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:40,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:49:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:40,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:40,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:40,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:40,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:40,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297173832] [2022-01-10 06:49:40,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297173832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:40,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:40,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:40,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411854366] [2022-01-10 06:49:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:40,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:40,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:40,460 INFO L87 Difference]: Start difference. First operand 10234 states and 13940 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:40,753 INFO L93 Difference]: Finished difference Result 14539 states and 19760 transitions. [2022-01-10 06:49:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:40,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-10 06:49:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:40,766 INFO L225 Difference]: With dead ends: 14539 [2022-01-10 06:49:40,766 INFO L226 Difference]: Without dead ends: 9927 [2022-01-10 06:49:40,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 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 06:49:40,773 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 52 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:40,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 235 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9927 states. [2022-01-10 06:49:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9927 to 6771. [2022-01-10 06:49:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6771 states, 6770 states have (on average 1.3432791728212703) internal successors, (9094), 6770 states have internal predecessors, (9094), 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 06:49:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 9094 transitions. [2022-01-10 06:49:41,051 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 9094 transitions. Word has length 67 [2022-01-10 06:49:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:41,051 INFO L470 AbstractCegarLoop]: Abstraction has 6771 states and 9094 transitions. [2022-01-10 06:49:41,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 9094 transitions. [2022-01-10 06:49:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:49:41,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:41,054 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:41,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:41,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:41,264 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1679614429, now seen corresponding path program 1 times [2022-01-10 06:49:41,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:41,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52694256] [2022-01-10 06:49:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:41,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:41,265 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:41,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:49:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:41,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:41,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:41,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:41,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:41,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52694256] [2022-01-10 06:49:41,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52694256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:41,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:41,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:41,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927017609] [2022-01-10 06:49:41,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:41,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:41,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:41,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:41,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:41,391 INFO L87 Difference]: Start difference. First operand 6771 states and 9094 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:41,689 INFO L93 Difference]: Finished difference Result 15110 states and 20268 transitions. [2022-01-10 06:49:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-10 06:49:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:41,700 INFO L225 Difference]: With dead ends: 15110 [2022-01-10 06:49:41,700 INFO L226 Difference]: Without dead ends: 10091 [2022-01-10 06:49:41,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 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 06:49:41,705 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 49 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:41,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 210 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10091 states. [2022-01-10 06:49:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10091 to 10051. [2022-01-10 06:49:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10051 states, 10050 states have (on average 1.323084577114428) internal successors, (13297), 10050 states have internal predecessors, (13297), 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 06:49:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10051 states to 10051 states and 13297 transitions. [2022-01-10 06:49:42,098 INFO L78 Accepts]: Start accepts. Automaton has 10051 states and 13297 transitions. Word has length 67 [2022-01-10 06:49:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:42,098 INFO L470 AbstractCegarLoop]: Abstraction has 10051 states and 13297 transitions. [2022-01-10 06:49:42,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 10051 states and 13297 transitions. [2022-01-10 06:49:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:49:42,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:42,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:42,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:42,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:42,307 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash 328546035, now seen corresponding path program 1 times [2022-01-10 06:49:42,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:42,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127328789] [2022-01-10 06:49:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:42,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:42,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:42,309 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:42,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:49:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:42,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:42,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:42,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:42,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:42,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127328789] [2022-01-10 06:49:42,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127328789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:42,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:42,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:42,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257962809] [2022-01-10 06:49:42,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:42,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:42,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:42,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:42,433 INFO L87 Difference]: Start difference. First operand 10051 states and 13297 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:42,887 INFO L93 Difference]: Finished difference Result 22818 states and 30113 transitions. [2022-01-10 06:49:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-10 06:49:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:42,900 INFO L225 Difference]: With dead ends: 22818 [2022-01-10 06:49:42,900 INFO L226 Difference]: Without dead ends: 14258 [2022-01-10 06:49:42,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 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 06:49:42,906 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 51 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:42,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 245 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2022-01-10 06:49:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 14014. [2022-01-10 06:49:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14014 states, 14013 states have (on average 1.3053593092128737) internal successors, (18292), 14013 states have internal predecessors, (18292), 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 06:49:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14014 states to 14014 states and 18292 transitions. [2022-01-10 06:49:43,378 INFO L78 Accepts]: Start accepts. Automaton has 14014 states and 18292 transitions. Word has length 67 [2022-01-10 06:49:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:43,378 INFO L470 AbstractCegarLoop]: Abstraction has 14014 states and 18292 transitions. [2022-01-10 06:49:43,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:49:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 14014 states and 18292 transitions. [2022-01-10 06:49:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:43,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:43,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:43,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:43,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:43,587 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1172514522, now seen corresponding path program 1 times [2022-01-10 06:49:43,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:43,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529267604] [2022-01-10 06:49:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:43,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:43,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:43,589 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:43,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:49:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:43,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:49:43,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:44,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:44,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529267604] [2022-01-10 06:49:44,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529267604] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:44,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:44,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:49:44,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703186216] [2022-01-10 06:49:44,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:44,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:49:44,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:49:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:49:44,316 INFO L87 Difference]: Start difference. First operand 14014 states and 18292 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 15 states have internal predecessors, (118), 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 06:49:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:44,751 INFO L93 Difference]: Finished difference Result 17190 states and 22466 transitions. [2022-01-10 06:49:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 06:49:44,753 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 15 states have internal predecessors, (118), 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 68 [2022-01-10 06:49:44,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:44,771 INFO L225 Difference]: With dead ends: 17190 [2022-01-10 06:49:44,771 INFO L226 Difference]: Without dead ends: 14038 [2022-01-10 06:49:44,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:49:44,779 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 88 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:44,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 858 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 49 Unchecked, 0.0s Time] [2022-01-10 06:49:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14038 states. [2022-01-10 06:49:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14038 to 14027. [2022-01-10 06:49:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14027 states, 14026 states have (on average 1.3052188792242978) internal successors, (18307), 14026 states have internal predecessors, (18307), 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 06:49:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14027 states to 14027 states and 18307 transitions. [2022-01-10 06:49:45,342 INFO L78 Accepts]: Start accepts. Automaton has 14027 states and 18307 transitions. Word has length 68 [2022-01-10 06:49:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:45,343 INFO L470 AbstractCegarLoop]: Abstraction has 14027 states and 18307 transitions. [2022-01-10 06:49:45,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 15 states have internal predecessors, (118), 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 06:49:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 14027 states and 18307 transitions. [2022-01-10 06:49:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:45,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:45,345 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:45,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 06:49:45,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:45,551 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:45,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:45,552 INFO L85 PathProgramCache]: Analyzing trace with hash -470914648, now seen corresponding path program 1 times [2022-01-10 06:49:45,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:45,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187630722] [2022-01-10 06:49:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:45,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:45,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:45,553 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:45,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:49:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:45,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:45,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:49:45,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:45,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:45,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187630722] [2022-01-10 06:49:45,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187630722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:45,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:45,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:45,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508327726] [2022-01-10 06:49:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:45,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:49:45,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:45,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:49:45,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:45,828 INFO L87 Difference]: Start difference. First operand 14027 states and 18307 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 06:49:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:46,261 INFO L93 Difference]: Finished difference Result 18322 states and 23898 transitions. [2022-01-10 06:49:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:49:46,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 68 [2022-01-10 06:49:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:46,274 INFO L225 Difference]: With dead ends: 18322 [2022-01-10 06:49:46,275 INFO L226 Difference]: Without dead ends: 14028 [2022-01-10 06:49:46,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:49:46,279 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 50 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:46,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 192 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-01-10 06:49:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14028 states. [2022-01-10 06:49:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14028 to 14027. [2022-01-10 06:49:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14027 states, 14026 states have (on average 1.3051475830600314) internal successors, (18306), 14026 states have internal predecessors, (18306), 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 06:49:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14027 states to 14027 states and 18306 transitions. [2022-01-10 06:49:46,726 INFO L78 Accepts]: Start accepts. Automaton has 14027 states and 18306 transitions. Word has length 68 [2022-01-10 06:49:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:46,726 INFO L470 AbstractCegarLoop]: Abstraction has 14027 states and 18306 transitions. [2022-01-10 06:49:46,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 06:49:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 14027 states and 18306 transitions. [2022-01-10 06:49:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:46,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:46,728 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:46,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:46,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:46,935 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2044429457, now seen corresponding path program 1 times [2022-01-10 06:49:46,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:46,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804162169] [2022-01-10 06:49:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:46,935 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:46,936 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:46,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:49:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:46,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:46,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:47,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:47,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:47,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804162169] [2022-01-10 06:49:47,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804162169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:47,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:47,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:47,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907864645] [2022-01-10 06:49:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:47,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:47,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:47,052 INFO L87 Difference]: Start difference. First operand 14027 states and 18306 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 06:49:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:47,293 INFO L93 Difference]: Finished difference Result 20128 states and 26262 transitions. [2022-01-10 06:49:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:47,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-01-10 06:49:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:47,299 INFO L225 Difference]: With dead ends: 20128 [2022-01-10 06:49:47,299 INFO L226 Difference]: Without dead ends: 6240 [2022-01-10 06:49:47,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 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 06:49:47,308 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 40 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:47,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2022-01-10 06:49:47,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5927. [2022-01-10 06:49:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5927 states, 5926 states have (on average 1.2819777252784341) internal successors, (7597), 5926 states have internal predecessors, (7597), 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 06:49:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5927 states to 5927 states and 7597 transitions. [2022-01-10 06:49:47,484 INFO L78 Accepts]: Start accepts. Automaton has 5927 states and 7597 transitions. Word has length 68 [2022-01-10 06:49:47,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:47,484 INFO L470 AbstractCegarLoop]: Abstraction has 5927 states and 7597 transitions. [2022-01-10 06:49:47,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 06:49:47,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5927 states and 7597 transitions. [2022-01-10 06:49:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:47,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:47,485 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:47,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:47,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:47,692 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:47,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash 736406421, now seen corresponding path program 1 times [2022-01-10 06:49:47,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587552492] [2022-01-10 06:49:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:47,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:47,693 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:47,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:49:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:47,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:47,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:47,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:48,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:48,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587552492] [2022-01-10 06:49:48,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587552492] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:48,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:48,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-10 06:49:48,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403231638] [2022-01-10 06:49:48,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:48,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:49:48,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:49:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:49:48,001 INFO L87 Difference]: Start difference. First operand 5927 states and 7597 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 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 06:49:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:48,369 INFO L93 Difference]: Finished difference Result 12303 states and 15617 transitions. [2022-01-10 06:49:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:49:48,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 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 68 [2022-01-10 06:49:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:48,377 INFO L225 Difference]: With dead ends: 12303 [2022-01-10 06:49:48,377 INFO L226 Difference]: Without dead ends: 8380 [2022-01-10 06:49:48,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 06:49:48,381 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 280 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:48,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 386 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:49:48,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2022-01-10 06:49:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 6634. [2022-01-10 06:49:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6634 states, 6633 states have (on average 1.2645861601085482) internal successors, (8388), 6633 states have internal predecessors, (8388), 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 06:49:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6634 states to 6634 states and 8388 transitions. [2022-01-10 06:49:48,635 INFO L78 Accepts]: Start accepts. Automaton has 6634 states and 8388 transitions. Word has length 68 [2022-01-10 06:49:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:48,635 INFO L470 AbstractCegarLoop]: Abstraction has 6634 states and 8388 transitions. [2022-01-10 06:49:48,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 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 06:49:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 6634 states and 8388 transitions. [2022-01-10 06:49:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:48,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:48,637 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:48,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 06:49:48,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:48,839 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash -808552246, now seen corresponding path program 1 times [2022-01-10 06:49:48,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:48,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827095696] [2022-01-10 06:49:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:48,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:48,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:48,841 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:48,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:49:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:48,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:49:48,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:49,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:49,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:49,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827095696] [2022-01-10 06:49:49,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827095696] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:49,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:49,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:49:49,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270413487] [2022-01-10 06:49:49,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:49,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:49:49,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:49,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:49:49,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:49:49,659 INFO L87 Difference]: Start difference. First operand 6634 states and 8388 transitions. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 15 states have internal predecessors, (129), 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 06:49:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:49,982 INFO L93 Difference]: Finished difference Result 8548 states and 10737 transitions. [2022-01-10 06:49:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 06:49:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 15 states have internal predecessors, (129), 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 68 [2022-01-10 06:49:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:49,989 INFO L225 Difference]: With dead ends: 8548 [2022-01-10 06:49:49,989 INFO L226 Difference]: Without dead ends: 7208 [2022-01-10 06:49:49,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:49:49,991 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 108 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:49,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 884 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2022-01-10 06:49:49,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7208 states. [2022-01-10 06:49:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7208 to 6666. [2022-01-10 06:49:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6666 states, 6665 states have (on average 1.2643660915228807) internal successors, (8427), 6665 states have internal predecessors, (8427), 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 06:49:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 8427 transitions. [2022-01-10 06:49:50,301 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 8427 transitions. Word has length 68 [2022-01-10 06:49:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:50,302 INFO L470 AbstractCegarLoop]: Abstraction has 6666 states and 8427 transitions. [2022-01-10 06:49:50,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 15 states have internal predecessors, (129), 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 06:49:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 8427 transitions. [2022-01-10 06:49:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:50,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:50,304 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:50,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 06:49:50,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:50,506 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:50,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1202919032, now seen corresponding path program 1 times [2022-01-10 06:49:50,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:50,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204927607] [2022-01-10 06:49:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:50,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:50,508 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:50,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:49:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:50,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:50,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:49:50,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:50,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:50,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204927607] [2022-01-10 06:49:50,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204927607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:50,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:50,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:50,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555272659] [2022-01-10 06:49:50,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:50,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:49:50,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:49:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:50,788 INFO L87 Difference]: Start difference. First operand 6666 states and 8427 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 06:49:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:51,068 INFO L93 Difference]: Finished difference Result 11844 states and 15010 transitions. [2022-01-10 06:49:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:49:51,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 68 [2022-01-10 06:49:51,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:51,075 INFO L225 Difference]: With dead ends: 11844 [2022-01-10 06:49:51,076 INFO L226 Difference]: Without dead ends: 6649 [2022-01-10 06:49:51,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:49:51,080 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 35 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:51,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 246 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-01-10 06:49:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2022-01-10 06:49:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 6649. [2022-01-10 06:49:51,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6649 states, 6648 states have (on average 1.2645908543922983) internal successors, (8407), 6648 states have internal predecessors, (8407), 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 06:49:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6649 states to 6649 states and 8407 transitions. [2022-01-10 06:49:51,310 INFO L78 Accepts]: Start accepts. Automaton has 6649 states and 8407 transitions. Word has length 68 [2022-01-10 06:49:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:51,311 INFO L470 AbstractCegarLoop]: Abstraction has 6649 states and 8407 transitions. [2022-01-10 06:49:51,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 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 06:49:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6649 states and 8407 transitions. [2022-01-10 06:49:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:51,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:51,312 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:51,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:51,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:51,521 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2104172128, now seen corresponding path program 1 times [2022-01-10 06:49:51,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:51,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526065187] [2022-01-10 06:49:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:51,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:51,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:51,523 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:51,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:49:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:51,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:49:51,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:52,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:52,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526065187] [2022-01-10 06:49:52,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526065187] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:52,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:52,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:49:52,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196777623] [2022-01-10 06:49:52,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:52,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:49:52,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:49:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:49:52,347 INFO L87 Difference]: Start difference. First operand 6649 states and 8407 transitions. Second operand has 16 states, 16 states have (on average 7.8125) internal successors, (125), 15 states have internal predecessors, (125), 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 06:49:52,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:52,723 INFO L93 Difference]: Finished difference Result 10768 states and 13546 transitions. [2022-01-10 06:49:52,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 06:49:52,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.8125) internal successors, (125), 15 states have internal predecessors, (125), 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 68 [2022-01-10 06:49:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:52,732 INFO L225 Difference]: With dead ends: 10768 [2022-01-10 06:49:52,733 INFO L226 Difference]: Without dead ends: 8875 [2022-01-10 06:49:52,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:49:52,736 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 181 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:52,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1423 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 158 Unchecked, 0.1s Time] [2022-01-10 06:49:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2022-01-10 06:49:52,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 6676. [2022-01-10 06:49:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6676 states, 6675 states have (on average 1.264119850187266) internal successors, (8438), 6675 states have internal predecessors, (8438), 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 06:49:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6676 states to 6676 states and 8438 transitions. [2022-01-10 06:49:52,999 INFO L78 Accepts]: Start accepts. Automaton has 6676 states and 8438 transitions. Word has length 68 [2022-01-10 06:49:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:52,999 INFO L470 AbstractCegarLoop]: Abstraction has 6676 states and 8438 transitions. [2022-01-10 06:49:52,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.8125) internal successors, (125), 15 states have internal predecessors, (125), 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 06:49:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6676 states and 8438 transitions. [2022-01-10 06:49:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:49:53,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:53,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:53,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:53,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:53,205 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1489195294, now seen corresponding path program 1 times [2022-01-10 06:49:53,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:53,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136782963] [2022-01-10 06:49:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:53,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:53,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:53,207 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:53,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:49:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:49:53,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:49:53,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:53,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:53,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136782963] [2022-01-10 06:49:53,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136782963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:53,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:53,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:53,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006570697] [2022-01-10 06:49:53,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:53,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:49:53,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:49:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:49:53,527 INFO L87 Difference]: Start difference. First operand 6676 states and 8438 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 06:49:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:53,755 INFO L93 Difference]: Finished difference Result 8580 states and 10823 transitions. [2022-01-10 06:49:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:49:53,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 68 [2022-01-10 06:49:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:53,762 INFO L225 Difference]: With dead ends: 8580 [2022-01-10 06:49:53,762 INFO L226 Difference]: Without dead ends: 6657 [2022-01-10 06:49:53,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:49:53,765 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 34 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:53,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 250 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-01-10 06:49:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6657 states. [2022-01-10 06:49:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6657 to 6657. [2022-01-10 06:49:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.2639723557692308) internal successors, (8413), 6656 states have internal predecessors, (8413), 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 06:49:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 8413 transitions. [2022-01-10 06:49:54,031 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 8413 transitions. Word has length 68 [2022-01-10 06:49:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:54,031 INFO L470 AbstractCegarLoop]: Abstraction has 6657 states and 8413 transitions. [2022-01-10 06:49:54,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 06:49:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 8413 transitions. [2022-01-10 06:49:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:49:54,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:54,032 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:54,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 06:49:54,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:54,233 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:54,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1858336274, now seen corresponding path program 1 times [2022-01-10 06:49:54,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:54,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693875190] [2022-01-10 06:49:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:54,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:54,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:54,235 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:54,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:49:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:54,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:49:54,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 06:49:54,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:54,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:54,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693875190] [2022-01-10 06:49:54,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693875190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:54,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:54,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:54,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277557012] [2022-01-10 06:49:54,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:54,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:49:54,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:54,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:49:54,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:54,484 INFO L87 Difference]: Start difference. First operand 6657 states and 8413 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 06:49:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:54,833 INFO L93 Difference]: Finished difference Result 11808 states and 15106 transitions. [2022-01-10 06:49:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:49:54,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 69 [2022-01-10 06:49:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:54,843 INFO L225 Difference]: With dead ends: 11808 [2022-01-10 06:49:54,843 INFO L226 Difference]: Without dead ends: 10064 [2022-01-10 06:49:54,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:54,847 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 241 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:54,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 446 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-01-10 06:49:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 7289. [2022-01-10 06:49:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7288 states have (on average 1.2609769484083424) internal successors, (9190), 7288 states have internal predecessors, (9190), 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 06:49:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 9190 transitions. [2022-01-10 06:49:55,116 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 9190 transitions. Word has length 69 [2022-01-10 06:49:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:55,116 INFO L470 AbstractCegarLoop]: Abstraction has 7289 states and 9190 transitions. [2022-01-10 06:49:55,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 06:49:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 9190 transitions. [2022-01-10 06:49:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:49:55,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:55,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:55,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:55,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:55,319 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1878615880, now seen corresponding path program 1 times [2022-01-10 06:49:55,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:55,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598740538] [2022-01-10 06:49:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:55,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:55,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:55,321 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:55,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 06:49:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:55,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:49:55,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:49:55,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:55,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:55,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598740538] [2022-01-10 06:49:55,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598740538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:55,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:55,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:49:55,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915056988] [2022-01-10 06:49:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:55,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:49:55,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:49:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:49:55,436 INFO L87 Difference]: Start difference. First operand 7289 states and 9190 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 06:49:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:55,818 INFO L93 Difference]: Finished difference Result 14377 states and 18137 transitions. [2022-01-10 06:49:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:49:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 69 [2022-01-10 06:49:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:55,827 INFO L225 Difference]: With dead ends: 14377 [2022-01-10 06:49:55,827 INFO L226 Difference]: Without dead ends: 10896 [2022-01-10 06:49:55,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 06:49:55,831 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 73 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:55,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 176 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10896 states. [2022-01-10 06:49:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10896 to 10844. [2022-01-10 06:49:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10844 states, 10843 states have (on average 1.2635801899843218) internal successors, (13701), 10843 states have internal predecessors, (13701), 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 06:49:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10844 states to 10844 states and 13701 transitions. [2022-01-10 06:49:56,217 INFO L78 Accepts]: Start accepts. Automaton has 10844 states and 13701 transitions. Word has length 69 [2022-01-10 06:49:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:56,217 INFO L470 AbstractCegarLoop]: Abstraction has 10844 states and 13701 transitions. [2022-01-10 06:49:56,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 06:49:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 10844 states and 13701 transitions. [2022-01-10 06:49:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:49:56,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:56,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:56,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 06:49:56,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:56,423 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:56,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1640322502, now seen corresponding path program 1 times [2022-01-10 06:49:56,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:56,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269085636] [2022-01-10 06:49:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:56,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:56,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:56,425 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:56,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 06:49:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:56,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:49:56,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:49:56,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:49:56,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:56,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269085636] [2022-01-10 06:49:56,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269085636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:49:56,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:49:56,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:49:56,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640527572] [2022-01-10 06:49:56,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:49:56,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:49:56,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:49:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:56,678 INFO L87 Difference]: Start difference. First operand 10844 states and 13701 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 06:49:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:57,191 INFO L93 Difference]: Finished difference Result 18597 states and 23765 transitions. [2022-01-10 06:49:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:49:57,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 69 [2022-01-10 06:49:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:57,210 INFO L225 Difference]: With dead ends: 18597 [2022-01-10 06:49:57,210 INFO L226 Difference]: Without dead ends: 14555 [2022-01-10 06:49:57,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:49:57,217 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 232 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:57,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 494 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:49:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14555 states. [2022-01-10 06:49:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14555 to 12554. [2022-01-10 06:49:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 12553 states have (on average 1.255954751852147) internal successors, (15766), 12553 states have internal predecessors, (15766), 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 06:49:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 15766 transitions. [2022-01-10 06:49:57,711 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 15766 transitions. Word has length 69 [2022-01-10 06:49:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:49:57,711 INFO L470 AbstractCegarLoop]: Abstraction has 12554 states and 15766 transitions. [2022-01-10 06:49:57,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 06:49:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 15766 transitions. [2022-01-10 06:49:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:49:57,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:49:57,713 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:49:57,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 06:49:57,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:49:57,913 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:49:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:49:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1213863785, now seen corresponding path program 1 times [2022-01-10 06:49:57,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:49:57,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323092718] [2022-01-10 06:49:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:49:57,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:49:57,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:49:57,915 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:49:57,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 06:49:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:49:57,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:49:57,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:49:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:58,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:49:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:49:58,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:49:58,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323092718] [2022-01-10 06:49:58,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323092718] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:49:58,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:49:58,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:49:58,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287244291] [2022-01-10 06:49:58,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:49:58,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:49:58,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:49:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:49:58,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:49:58,762 INFO L87 Difference]: Start difference. First operand 12554 states and 15766 transitions. Second operand has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 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 06:49:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:49:59,634 INFO L93 Difference]: Finished difference Result 28383 states and 35630 transitions. [2022-01-10 06:49:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 06:49:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 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 69 [2022-01-10 06:49:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:49:59,655 INFO L225 Difference]: With dead ends: 28383 [2022-01-10 06:49:59,655 INFO L226 Difference]: Without dead ends: 17662 [2022-01-10 06:49:59,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-01-10 06:49:59,667 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 217 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:49:59,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1718 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 436 Invalid, 0 Unknown, 345 Unchecked, 0.2s Time] [2022-01-10 06:49:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17662 states. [2022-01-10 06:50:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17662 to 12570. [2022-01-10 06:50:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12570 states, 12569 states have (on average 1.2544355159519454) internal successors, (15767), 12569 states have internal predecessors, (15767), 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 06:50:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12570 states to 12570 states and 15767 transitions. [2022-01-10 06:50:00,229 INFO L78 Accepts]: Start accepts. Automaton has 12570 states and 15767 transitions. Word has length 69 [2022-01-10 06:50:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:00,229 INFO L470 AbstractCegarLoop]: Abstraction has 12570 states and 15767 transitions. [2022-01-10 06:50:00,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 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 06:50:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 12570 states and 15767 transitions. [2022-01-10 06:50:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:50:00,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:00,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:50:00,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 06:50:00,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:00,436 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:00,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:00,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1615413716, now seen corresponding path program 1 times [2022-01-10 06:50:00,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:00,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716920743] [2022-01-10 06:50:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:00,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:00,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:00,437 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:00,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 06:50:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:00,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:50:00,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:50:00,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:00,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:00,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716920743] [2022-01-10 06:50:00,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716920743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:00,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:00,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:50:00,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038402557] [2022-01-10 06:50:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:00,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:50:00,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:00,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:50:00,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:50:00,696 INFO L87 Difference]: Start difference. First operand 12570 states and 15767 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 06:50:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:01,240 INFO L93 Difference]: Finished difference Result 20396 states and 25936 transitions. [2022-01-10 06:50:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:50:01,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 69 [2022-01-10 06:50:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:01,260 INFO L225 Difference]: With dead ends: 20396 [2022-01-10 06:50:01,261 INFO L226 Difference]: Without dead ends: 15884 [2022-01-10 06:50:01,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:50:01,318 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 277 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:01,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 423 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:50:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15884 states. [2022-01-10 06:50:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15884 to 13476. [2022-01-10 06:50:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13476 states, 13475 states have (on average 1.2485343228200372) internal successors, (16824), 13475 states have internal predecessors, (16824), 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 06:50:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13476 states to 13476 states and 16824 transitions. [2022-01-10 06:50:01,869 INFO L78 Accepts]: Start accepts. Automaton has 13476 states and 16824 transitions. Word has length 69 [2022-01-10 06:50:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:01,869 INFO L470 AbstractCegarLoop]: Abstraction has 13476 states and 16824 transitions. [2022-01-10 06:50:01,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 06:50:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13476 states and 16824 transitions. [2022-01-10 06:50:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:50:01,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:01,871 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:50:01,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 06:50:02,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:02,071 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2029316117, now seen corresponding path program 1 times [2022-01-10 06:50:02,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:02,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137749922] [2022-01-10 06:50:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:02,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:02,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:02,073 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:02,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 06:50:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:02,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:50:02,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:02,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:50:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:03,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:03,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137749922] [2022-01-10 06:50:03,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137749922] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:50:03,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:50:03,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:50:03,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698318887] [2022-01-10 06:50:03,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:50:03,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:50:03,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:03,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:50:03,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:50:03,030 INFO L87 Difference]: Start difference. First operand 13476 states and 16824 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 15 states have internal predecessors, (137), 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 06:50:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:03,695 INFO L93 Difference]: Finished difference Result 21447 states and 26724 transitions. [2022-01-10 06:50:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:50:03,695 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 15 states have internal predecessors, (137), 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 72 [2022-01-10 06:50:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:03,710 INFO L225 Difference]: With dead ends: 21447 [2022-01-10 06:50:03,710 INFO L226 Difference]: Without dead ends: 14572 [2022-01-10 06:50:03,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:50:03,719 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 137 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:03,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 947 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 193 Unchecked, 0.1s Time] [2022-01-10 06:50:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14572 states. [2022-01-10 06:50:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14572 to 13567. [2022-01-10 06:50:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13567 states, 13566 states have (on average 1.2489311514079315) internal successors, (16943), 13566 states have internal predecessors, (16943), 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 06:50:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 16943 transitions. [2022-01-10 06:50:04,300 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 16943 transitions. Word has length 72 [2022-01-10 06:50:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:04,300 INFO L470 AbstractCegarLoop]: Abstraction has 13567 states and 16943 transitions. [2022-01-10 06:50:04,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 15 states have internal predecessors, (137), 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 06:50:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 16943 transitions. [2022-01-10 06:50:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:50:04,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:04,302 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:50:04,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 06:50:04,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:04,503 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:04,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1146280427, now seen corresponding path program 1 times [2022-01-10 06:50:04,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668912034] [2022-01-10 06:50:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:04,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:04,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:04,504 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:04,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 06:50:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:50:04,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:04,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:50:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:05,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:05,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668912034] [2022-01-10 06:50:05,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668912034] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:50:05,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:50:05,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:50:05,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537597874] [2022-01-10 06:50:05,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:50:05,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:50:05,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:50:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:50:05,205 INFO L87 Difference]: Start difference. First operand 13567 states and 16943 transitions. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 15 states have internal predecessors, (123), 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 06:50:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:05,891 INFO L93 Difference]: Finished difference Result 23694 states and 29578 transitions. [2022-01-10 06:50:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 06:50:05,891 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 15 states have internal predecessors, (123), 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 72 [2022-01-10 06:50:05,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:05,911 INFO L225 Difference]: With dead ends: 23694 [2022-01-10 06:50:05,911 INFO L226 Difference]: Without dead ends: 16826 [2022-01-10 06:50:05,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:50:05,921 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 110 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:05,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1089 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 122 Unchecked, 0.1s Time] [2022-01-10 06:50:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16826 states. [2022-01-10 06:50:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16826 to 13563. [2022-01-10 06:50:06,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13563 states, 13562 states have (on average 1.2487833652853562) internal successors, (16936), 13562 states have internal predecessors, (16936), 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 06:50:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13563 states to 13563 states and 16936 transitions. [2022-01-10 06:50:06,530 INFO L78 Accepts]: Start accepts. Automaton has 13563 states and 16936 transitions. Word has length 72 [2022-01-10 06:50:06,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:06,530 INFO L470 AbstractCegarLoop]: Abstraction has 13563 states and 16936 transitions. [2022-01-10 06:50:06,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 15 states have internal predecessors, (123), 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 06:50:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13563 states and 16936 transitions. [2022-01-10 06:50:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:50:06,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:06,532 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:50:06,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 06:50:06,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:06,732 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash -214667181, now seen corresponding path program 1 times [2022-01-10 06:50:06,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:06,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24087947] [2022-01-10 06:50:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:06,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:06,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:06,734 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:06,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 06:50:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:06,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:50:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:50:07,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:07,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24087947] [2022-01-10 06:50:07,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24087947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:07,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:07,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:50:07,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608980652] [2022-01-10 06:50:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:07,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:50:07,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:50:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:50:07,001 INFO L87 Difference]: Start difference. First operand 13563 states and 16936 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 06:50:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:07,509 INFO L93 Difference]: Finished difference Result 22246 states and 27853 transitions. [2022-01-10 06:50:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:50:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 72 [2022-01-10 06:50:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:07,523 INFO L225 Difference]: With dead ends: 22246 [2022-01-10 06:50:07,524 INFO L226 Difference]: Without dead ends: 13484 [2022-01-10 06:50:07,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:50:07,529 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 50 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:07,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 194 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-01-10 06:50:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13484 states. [2022-01-10 06:50:08,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13484 to 13484. [2022-01-10 06:50:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13484 states, 13483 states have (on average 1.2477193502929615) internal successors, (16823), 13483 states have internal predecessors, (16823), 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 06:50:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13484 states to 13484 states and 16823 transitions. [2022-01-10 06:50:08,069 INFO L78 Accepts]: Start accepts. Automaton has 13484 states and 16823 transitions. Word has length 72 [2022-01-10 06:50:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:08,070 INFO L470 AbstractCegarLoop]: Abstraction has 13484 states and 16823 transitions. [2022-01-10 06:50:08,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 06:50:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 13484 states and 16823 transitions. [2022-01-10 06:50:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 06:50:08,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:08,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:50:08,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 06:50:08,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:08,272 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1425936925, now seen corresponding path program 1 times [2022-01-10 06:50:08,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:08,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055178699] [2022-01-10 06:50:08,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:08,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:08,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:08,274 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:08,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 06:50:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:08,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:50:08,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:50:08,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:08,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:08,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055178699] [2022-01-10 06:50:08,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055178699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:08,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:08,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:50:08,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983973175] [2022-01-10 06:50:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:08,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:50:08,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:08,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:50:08,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:50:08,399 INFO L87 Difference]: Start difference. First operand 13484 states and 16823 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:09,145 INFO L93 Difference]: Finished difference Result 25143 states and 31398 transitions. [2022-01-10 06:50:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:50:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 06:50:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:09,166 INFO L225 Difference]: With dead ends: 25143 [2022-01-10 06:50:09,166 INFO L226 Difference]: Without dead ends: 20756 [2022-01-10 06:50:09,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 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 06:50:09,173 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 61 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:09,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 180 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:50:09,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20756 states. [2022-01-10 06:50:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20756 to 13786. [2022-01-10 06:50:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13786 states, 13785 states have (on average 1.2442509974610083) internal successors, (17152), 13785 states have internal predecessors, (17152), 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 06:50:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13786 states to 13786 states and 17152 transitions. [2022-01-10 06:50:09,824 INFO L78 Accepts]: Start accepts. Automaton has 13786 states and 17152 transitions. Word has length 73 [2022-01-10 06:50:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:09,824 INFO L470 AbstractCegarLoop]: Abstraction has 13786 states and 17152 transitions. [2022-01-10 06:50:09,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 13786 states and 17152 transitions. [2022-01-10 06:50:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 06:50:09,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:09,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:50:09,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 06:50:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:10,026 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash -646457905, now seen corresponding path program 1 times [2022-01-10 06:50:10,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:10,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093873935] [2022-01-10 06:50:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:10,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:10,028 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:10,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 06:50:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:10,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:50:10,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:10,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:10,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:10,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093873935] [2022-01-10 06:50:10,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093873935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:10,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:10,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:50:10,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740426920] [2022-01-10 06:50:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:10,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:50:10,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:50:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:50:10,152 INFO L87 Difference]: Start difference. First operand 13786 states and 17152 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:10,574 INFO L93 Difference]: Finished difference Result 16949 states and 20997 transitions. [2022-01-10 06:50:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:50:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 06:50:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:10,584 INFO L225 Difference]: With dead ends: 16949 [2022-01-10 06:50:10,584 INFO L226 Difference]: Without dead ends: 11586 [2022-01-10 06:50:10,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 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 06:50:10,588 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 49 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:10,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 250 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:50:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2022-01-10 06:50:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 8027. [2022-01-10 06:50:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8027 states, 8026 states have (on average 1.2261400448542237) internal successors, (9841), 8026 states have internal predecessors, (9841), 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 06:50:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 9841 transitions. [2022-01-10 06:50:11,053 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 9841 transitions. Word has length 73 [2022-01-10 06:50:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:11,053 INFO L470 AbstractCegarLoop]: Abstraction has 8027 states and 9841 transitions. [2022-01-10 06:50:11,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 9841 transitions. [2022-01-10 06:50:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 06:50:11,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:11,054 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:50:11,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-01-10 06:50:11,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:11,257 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash 749745891, now seen corresponding path program 1 times [2022-01-10 06:50:11,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:11,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153236157] [2022-01-10 06:50:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:11,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:11,259 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:11,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 06:50:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:11,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:50:11,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:11,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:11,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:11,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153236157] [2022-01-10 06:50:11,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153236157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:11,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:11,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:50:11,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225680868] [2022-01-10 06:50:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:11,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:50:11,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:50:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:50:11,386 INFO L87 Difference]: Start difference. First operand 8027 states and 9841 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:11,706 INFO L93 Difference]: Finished difference Result 9723 states and 11916 transitions. [2022-01-10 06:50:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:50:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 06:50:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:11,714 INFO L225 Difference]: With dead ends: 9723 [2022-01-10 06:50:11,714 INFO L226 Difference]: Without dead ends: 7056 [2022-01-10 06:50:11,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 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 06:50:11,717 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 48 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:11,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:50:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2022-01-10 06:50:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 7054. [2022-01-10 06:50:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7054 states, 7053 states have (on average 1.2119665390613923) internal successors, (8548), 7053 states have internal predecessors, (8548), 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 06:50:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7054 states to 7054 states and 8548 transitions. [2022-01-10 06:50:12,026 INFO L78 Accepts]: Start accepts. Automaton has 7054 states and 8548 transitions. Word has length 73 [2022-01-10 06:50:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:12,026 INFO L470 AbstractCegarLoop]: Abstraction has 7054 states and 8548 transitions. [2022-01-10 06:50:12,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7054 states and 8548 transitions. [2022-01-10 06:50:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:50:12,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:12,028 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:50:12,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-01-10 06:50:12,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:12,228 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:12,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:12,229 INFO L85 PathProgramCache]: Analyzing trace with hash -252482907, now seen corresponding path program 1 times [2022-01-10 06:50:12,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:12,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562238365] [2022-01-10 06:50:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:12,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:12,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:12,230 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:12,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 06:50:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:12,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 06:50:12,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:13,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:50:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:14,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:14,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562238365] [2022-01-10 06:50:14,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562238365] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:50:14,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:50:14,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 39 [2022-01-10 06:50:14,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369207190] [2022-01-10 06:50:14,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:50:14,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-10 06:50:14,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:14,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-10 06:50:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1249, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 06:50:14,969 INFO L87 Difference]: Start difference. First operand 7054 states and 8548 transitions. Second operand has 39 states, 39 states have (on average 3.5128205128205128) internal successors, (137), 39 states have internal predecessors, (137), 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 06:50:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:18,878 INFO L93 Difference]: Finished difference Result 12887 states and 15451 transitions. [2022-01-10 06:50:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-10 06:50:18,878 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5128205128205128) internal successors, (137), 39 states have internal predecessors, (137), 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 74 [2022-01-10 06:50:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:18,889 INFO L225 Difference]: With dead ends: 12887 [2022-01-10 06:50:18,889 INFO L226 Difference]: Without dead ends: 11593 [2022-01-10 06:50:18,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1090, Invalid=5390, Unknown=0, NotChecked=0, Total=6480 [2022-01-10 06:50:18,893 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 2324 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 4351 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 653 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:18,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2324 Valid, 4351 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1834 Invalid, 0 Unknown, 653 Unchecked, 1.2s Time] [2022-01-10 06:50:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11593 states. [2022-01-10 06:50:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11593 to 6999. [2022-01-10 06:50:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 6998 states have (on average 1.2122034867104887) internal successors, (8483), 6998 states have internal predecessors, (8483), 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 06:50:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 8483 transitions. [2022-01-10 06:50:19,276 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 8483 transitions. Word has length 74 [2022-01-10 06:50:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:19,276 INFO L470 AbstractCegarLoop]: Abstraction has 6999 states and 8483 transitions. [2022-01-10 06:50:19,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5128205128205128) internal successors, (137), 39 states have internal predecessors, (137), 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 06:50:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 8483 transitions. [2022-01-10 06:50:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:50:19,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:19,277 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:50:19,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 06:50:19,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:19,477 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1583905515, now seen corresponding path program 1 times [2022-01-10 06:50:19,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:19,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570514759] [2022-01-10 06:50:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:19,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:19,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:19,479 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:19,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 06:50:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:19,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 06:50:19,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:20,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:50:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:50:21,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:21,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570514759] [2022-01-10 06:50:21,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570514759] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:50:21,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:50:21,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2022-01-10 06:50:21,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918175486] [2022-01-10 06:50:21,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:50:21,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-10 06:50:21,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-10 06:50:21,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 06:50:21,623 INFO L87 Difference]: Start difference. First operand 6999 states and 8483 transitions. Second operand has 35 states, 35 states have (on average 3.914285714285714) internal successors, (137), 35 states have internal predecessors, (137), 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 06:50:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:25,749 INFO L93 Difference]: Finished difference Result 13897 states and 16649 transitions. [2022-01-10 06:50:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-10 06:50:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.914285714285714) internal successors, (137), 35 states have internal predecessors, (137), 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 74 [2022-01-10 06:50:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:25,764 INFO L225 Difference]: With dead ends: 13897 [2022-01-10 06:50:25,764 INFO L226 Difference]: Without dead ends: 13326 [2022-01-10 06:50:25,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1073, Invalid=5569, Unknown=0, NotChecked=0, Total=6642 [2022-01-10 06:50:25,768 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 2457 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2457 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:25,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2457 Valid, 3729 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1661 Invalid, 0 Unknown, 109 Unchecked, 1.3s Time] [2022-01-10 06:50:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13326 states. [2022-01-10 06:50:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13326 to 6748. [2022-01-10 06:50:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 6747 states have (on average 1.2117978360752928) internal successors, (8176), 6747 states have internal predecessors, (8176), 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 06:50:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 8176 transitions. [2022-01-10 06:50:26,153 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 8176 transitions. Word has length 74 [2022-01-10 06:50:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:26,153 INFO L470 AbstractCegarLoop]: Abstraction has 6748 states and 8176 transitions. [2022-01-10 06:50:26,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.914285714285714) internal successors, (137), 35 states have internal predecessors, (137), 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 06:50:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 8176 transitions. [2022-01-10 06:50:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:50:26,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:26,154 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:50:26,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 06:50:26,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:26,355 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:26,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash -291060481, now seen corresponding path program 1 times [2022-01-10 06:50:26,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:26,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380775438] [2022-01-10 06:50:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:26,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:26,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:26,357 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:26,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 06:50:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:26,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:50:26,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 06:50:26,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:26,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:26,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380775438] [2022-01-10 06:50:26,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380775438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:26,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:26,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:50:26,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404228052] [2022-01-10 06:50:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:26,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:50:26,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:50:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:50:26,480 INFO L87 Difference]: Start difference. First operand 6748 states and 8176 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:27,010 INFO L93 Difference]: Finished difference Result 12533 states and 15179 transitions. [2022-01-10 06:50:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:50:27,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 06:50:27,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:27,020 INFO L225 Difference]: With dead ends: 12533 [2022-01-10 06:50:27,020 INFO L226 Difference]: Without dead ends: 10318 [2022-01-10 06:50:27,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 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 06:50:27,022 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:27,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 174 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:50:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2022-01-10 06:50:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 6944. [2022-01-10 06:50:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6943 states have (on average 1.2014979115656057) internal successors, (8342), 6943 states have internal predecessors, (8342), 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 06:50:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 8342 transitions. [2022-01-10 06:50:27,422 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 8342 transitions. Word has length 74 [2022-01-10 06:50:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:27,422 INFO L470 AbstractCegarLoop]: Abstraction has 6944 states and 8342 transitions. [2022-01-10 06:50:27,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:50:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 8342 transitions. [2022-01-10 06:50:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 06:50:27,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:27,424 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 06:50:27,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-01-10 06:50:27,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:27,624 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1370040225, now seen corresponding path program 2 times [2022-01-10 06:50:27,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:27,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745717805] [2022-01-10 06:50:27,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:50:27,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:27,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:27,626 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:27,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 06:50:27,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:50:27,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:50:27,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:50:27,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:50:27,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:50:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:50:28,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:28,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745717805] [2022-01-10 06:50:28,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745717805] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:50:28,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:50:28,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:50:28,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729572771] [2022-01-10 06:50:28,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:50:28,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:50:28,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:50:28,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:50:28,022 INFO L87 Difference]: Start difference. First operand 6944 states and 8342 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 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 06:50:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:28,538 INFO L93 Difference]: Finished difference Result 14898 states and 17859 transitions. [2022-01-10 06:50:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:50:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 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 89 [2022-01-10 06:50:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:28,547 INFO L225 Difference]: With dead ends: 14898 [2022-01-10 06:50:28,547 INFO L226 Difference]: Without dead ends: 9112 [2022-01-10 06:50:28,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:50:28,551 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 171 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:28,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 420 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-01-10 06:50:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2022-01-10 06:50:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 8472. [2022-01-10 06:50:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8472 states, 8471 states have (on average 1.1834494156534057) internal successors, (10025), 8471 states have internal predecessors, (10025), 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 06:50:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8472 states to 8472 states and 10025 transitions. [2022-01-10 06:50:29,023 INFO L78 Accepts]: Start accepts. Automaton has 8472 states and 10025 transitions. Word has length 89 [2022-01-10 06:50:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:29,023 INFO L470 AbstractCegarLoop]: Abstraction has 8472 states and 10025 transitions. [2022-01-10 06:50:29,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 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 06:50:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states and 10025 transitions. [2022-01-10 06:50:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:50:29,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:29,027 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2022-01-10 06:50:29,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-01-10 06:50:29,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:29,228 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash 801041767, now seen corresponding path program 1 times [2022-01-10 06:50:29,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:29,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134480045] [2022-01-10 06:50:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:29,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:29,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:29,230 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:29,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 06:50:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:29,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:50:29,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 06:50:29,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:50:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 06:50:30,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:30,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134480045] [2022-01-10 06:50:30,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134480045] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:50:30,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:50:30,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 06:50:30,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29092000] [2022-01-10 06:50:30,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:50:30,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:50:30,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:50:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:50:30,271 INFO L87 Difference]: Start difference. First operand 8472 states and 10025 transitions. Second operand has 16 states, 16 states have (on average 10.625) internal successors, (170), 15 states have internal predecessors, (170), 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 06:50:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:31,029 INFO L93 Difference]: Finished difference Result 12889 states and 15348 transitions. [2022-01-10 06:50:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 06:50:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 15 states have internal predecessors, (170), 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 117 [2022-01-10 06:50:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:31,040 INFO L225 Difference]: With dead ends: 12889 [2022-01-10 06:50:31,040 INFO L226 Difference]: Without dead ends: 10860 [2022-01-10 06:50:31,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2022-01-10 06:50:31,043 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 274 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:31,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1055 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 180 Unchecked, 0.1s Time] [2022-01-10 06:50:31,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10860 states. [2022-01-10 06:50:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10860 to 9909. [2022-01-10 06:50:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9909 states, 9908 states have (on average 1.185506661283811) internal successors, (11746), 9908 states have internal predecessors, (11746), 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 06:50:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9909 states to 9909 states and 11746 transitions. [2022-01-10 06:50:31,654 INFO L78 Accepts]: Start accepts. Automaton has 9909 states and 11746 transitions. Word has length 117 [2022-01-10 06:50:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:31,655 INFO L470 AbstractCegarLoop]: Abstraction has 9909 states and 11746 transitions. [2022-01-10 06:50:31,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 15 states have internal predecessors, (170), 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 06:50:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9909 states and 11746 transitions. [2022-01-10 06:50:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:50:31,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:31,659 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:50:31,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-01-10 06:50:31,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:31,859 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1502641641, now seen corresponding path program 1 times [2022-01-10 06:50:31,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:31,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389516365] [2022-01-10 06:50:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:31,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:31,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:31,861 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:31,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-01-10 06:50:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:31,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:50:31,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 06:50:32,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:32,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:32,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389516365] [2022-01-10 06:50:32,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389516365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:32,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:32,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:50:32,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917460566] [2022-01-10 06:50:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:32,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:50:32,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:50:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:50:32,443 INFO L87 Difference]: Start difference. First operand 9909 states and 11746 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 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 06:50:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:33,018 INFO L93 Difference]: Finished difference Result 12685 states and 15021 transitions. [2022-01-10 06:50:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:50:33,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 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 117 [2022-01-10 06:50:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:33,028 INFO L225 Difference]: With dead ends: 12685 [2022-01-10 06:50:33,028 INFO L226 Difference]: Without dead ends: 10566 [2022-01-10 06:50:33,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:50:33,031 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 53 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:33,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 361 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 63 Unchecked, 0.0s Time] [2022-01-10 06:50:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10566 states. [2022-01-10 06:50:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10566 to 10546. [2022-01-10 06:50:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10546 states, 10545 states have (on average 1.1831199620673305) internal successors, (12476), 10545 states have internal predecessors, (12476), 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 06:50:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10546 states to 10546 states and 12476 transitions. [2022-01-10 06:50:33,671 INFO L78 Accepts]: Start accepts. Automaton has 10546 states and 12476 transitions. Word has length 117 [2022-01-10 06:50:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:33,671 INFO L470 AbstractCegarLoop]: Abstraction has 10546 states and 12476 transitions. [2022-01-10 06:50:33,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 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 06:50:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 10546 states and 12476 transitions. [2022-01-10 06:50:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:50:33,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:33,676 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:50:33,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-01-10 06:50:33,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:33,876 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2132794133, now seen corresponding path program 1 times [2022-01-10 06:50:33,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:33,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731881443] [2022-01-10 06:50:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:33,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:33,883 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:33,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-01-10 06:50:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:33,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:50:33,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:50:34,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:50:34,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:34,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731881443] [2022-01-10 06:50:34,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731881443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:50:34,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:50:34,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:50:34,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636035894] [2022-01-10 06:50:34,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:50:34,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:50:34,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:50:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:50:34,410 INFO L87 Difference]: Start difference. First operand 10546 states and 12476 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 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 06:50:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:35,062 INFO L93 Difference]: Finished difference Result 13311 states and 15795 transitions. [2022-01-10 06:50:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:50:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 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 117 [2022-01-10 06:50:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:35,072 INFO L225 Difference]: With dead ends: 13311 [2022-01-10 06:50:35,072 INFO L226 Difference]: Without dead ends: 10871 [2022-01-10 06:50:35,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:50:35,075 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 63 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:35,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 317 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 48 Unchecked, 0.0s Time] [2022-01-10 06:50:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2022-01-10 06:50:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 10859. [2022-01-10 06:50:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10859 states, 10858 states have (on average 1.1808804568060416) internal successors, (12822), 10858 states have internal predecessors, (12822), 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 06:50:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10859 states to 10859 states and 12822 transitions. [2022-01-10 06:50:35,706 INFO L78 Accepts]: Start accepts. Automaton has 10859 states and 12822 transitions. Word has length 117 [2022-01-10 06:50:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:35,706 INFO L470 AbstractCegarLoop]: Abstraction has 10859 states and 12822 transitions. [2022-01-10 06:50:35,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 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 06:50:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 10859 states and 12822 transitions. [2022-01-10 06:50:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:50:35,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:35,710 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2022-01-10 06:50:35,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-01-10 06:50:35,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:35,911 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:35,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash -96351511, now seen corresponding path program 1 times [2022-01-10 06:50:35,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:35,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785157463] [2022-01-10 06:50:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:35,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:35,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:35,913 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:35,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-01-10 06:50:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:50:35,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:50:35,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:50:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 61 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:50:36,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:50:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 61 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:50:37,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:50:37,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785157463] [2022-01-10 06:50:37,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785157463] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:50:37,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:50:37,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-01-10 06:50:37,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383328125] [2022-01-10 06:50:37,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:50:37,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 06:50:37,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:50:37,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 06:50:37,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:50:37,161 INFO L87 Difference]: Start difference. First operand 10859 states and 12822 transitions. Second operand has 20 states, 20 states have (on average 9.35) internal successors, (187), 19 states have internal predecessors, (187), 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 06:50:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:50:38,026 INFO L93 Difference]: Finished difference Result 12965 states and 15373 transitions. [2022-01-10 06:50:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:50:38,026 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.35) internal successors, (187), 19 states have internal predecessors, (187), 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 117 [2022-01-10 06:50:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:50:38,038 INFO L225 Difference]: With dead ends: 12965 [2022-01-10 06:50:38,039 INFO L226 Difference]: Without dead ends: 11593 [2022-01-10 06:50:38,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-01-10 06:50:38,042 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 203 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:50:38,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1419 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 135 Unchecked, 0.1s Time] [2022-01-10 06:50:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11593 states. [2022-01-10 06:50:38,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11593 to 10799. [2022-01-10 06:50:38,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10799 states, 10798 states have (on average 1.1800333395073161) internal successors, (12742), 10798 states have internal predecessors, (12742), 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 06:50:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10799 states to 10799 states and 12742 transitions. [2022-01-10 06:50:38,723 INFO L78 Accepts]: Start accepts. Automaton has 10799 states and 12742 transitions. Word has length 117 [2022-01-10 06:50:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:50:38,723 INFO L470 AbstractCegarLoop]: Abstraction has 10799 states and 12742 transitions. [2022-01-10 06:50:38,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.35) internal successors, (187), 19 states have internal predecessors, (187), 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 06:50:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 10799 states and 12742 transitions. [2022-01-10 06:50:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:50:38,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:50:38,727 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-01-10 06:50:38,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-01-10 06:50:38,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:50:38,928 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:50:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:50:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1127221901, now seen corresponding path program 1 times [2022-01-10 06:50:38,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:50:38,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277522436] [2022-01-10 06:50:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:50:38,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:50:38,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:50:38,929 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:50:38,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process