/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_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:25:24,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:25:24,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:25:24,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:25:24,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:25:24,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:25:24,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:25:24,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:25:24,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:25:24,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:25:24,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:25:24,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:25:24,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:25:24,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:25:24,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:25:24,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:25:24,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:25:24,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:25:24,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:25:24,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:25:24,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:25:24,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:25:24,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:25:24,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:25:24,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:25:24,410 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:25:24,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:25:24,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7806a855b/f814e305a7ff4c058869c350e536509c/FLAG8706a3ae7 [2022-01-10 01:25:24,823 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:25:24,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:25:24,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7806a855b/f814e305a7ff4c058869c350e536509c/FLAG8706a3ae7 [2022-01-10 01:25:25,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7806a855b/f814e305a7ff4c058869c350e536509c [2022-01-10 01:25:25,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:25:25,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:25:25,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:25:25,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:25:25,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:25:25,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256733c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25, skipping insertion in model container [2022-01-10 01:25:25,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:25:25,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:25:25,500 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-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14417,14430] [2022-01-10 01:25:25,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:25:25,560 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:25:25,631 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-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14417,14430] [2022-01-10 01:25:25,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:25:25,671 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:25:25,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25 WrapperNode [2022-01-10 01:25:25,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:25:25,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:25:25,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:25:25,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:25:25,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,745 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1181 [2022-01-10 01:25:25,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:25:25,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:25:25,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:25:25,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:25:25,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:25:25,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:25:25,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:25:25,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:25:25,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (1/1) ... [2022-01-10 01:25:25,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:25:25,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:25:25,828 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 01:25:25,839 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 01:25:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:25:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:25:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:25:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:25:26,005 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:25:26,006 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:25:26,717 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:25:26,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:25:26,729 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:25:26,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:25:26 BoogieIcfgContainer [2022-01-10 01:25:26,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:25:26,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:25:26,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:25:26,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:25:26,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:25:25" (1/3) ... [2022-01-10 01:25:26,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5262b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:25:26, skipping insertion in model container [2022-01-10 01:25:26,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:25:25" (2/3) ... [2022-01-10 01:25:26,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5262b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:25:26, skipping insertion in model container [2022-01-10 01:25:26,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:25:26" (3/3) ... [2022-01-10 01:25:26,738 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:25:26,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:25:26,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:25:26,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:25:26,796 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 01:25:26,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:25:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.7806451612903227) internal successors, (552), 311 states have internal predecessors, (552), 0 states have call successors, (0), 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 01:25:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 01:25:26,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:26,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:26,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:26,825 INFO L85 PathProgramCache]: Analyzing trace with hash 811765820, now seen corresponding path program 1 times [2022-01-10 01:25:26,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556972214] [2022-01-10 01:25:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:26,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:27,189 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 01:25:27,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:27,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556972214] [2022-01-10 01:25:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556972214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:27,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:27,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:27,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485600214] [2022-01-10 01:25:27,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:27,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:27,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:27,219 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.7806451612903227) internal successors, (552), 311 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 01:25:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:27,364 INFO L93 Difference]: Finished difference Result 634 states and 1113 transitions. [2022-01-10 01:25:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:27,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-10 01:25:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:27,384 INFO L225 Difference]: With dead ends: 634 [2022-01-10 01:25:27,384 INFO L226 Difference]: Without dead ends: 510 [2022-01-10 01:25:27,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:27,396 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 372 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:27,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 919 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-01-10 01:25:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2022-01-10 01:25:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.4930966469428009) internal successors, (757), 507 states have internal predecessors, (757), 0 states have call successors, (0), 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 01:25:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 757 transitions. [2022-01-10 01:25:27,483 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 757 transitions. Word has length 146 [2022-01-10 01:25:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:27,484 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 757 transitions. [2022-01-10 01:25:27,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 01:25:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 757 transitions. [2022-01-10 01:25:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 01:25:27,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:27,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:27,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:25:27,487 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1665088068, now seen corresponding path program 1 times [2022-01-10 01:25:27,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:27,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715999979] [2022-01-10 01:25:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:27,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:27,613 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 01:25:27,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:27,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715999979] [2022-01-10 01:25:27,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715999979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:27,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:27,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:27,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996182994] [2022-01-10 01:25:27,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:27,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:27,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:27,616 INFO L87 Difference]: Start difference. First operand 508 states and 757 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 01:25:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:27,718 INFO L93 Difference]: Finished difference Result 1104 states and 1692 transitions. [2022-01-10 01:25:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-10 01:25:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:27,725 INFO L225 Difference]: With dead ends: 1104 [2022-01-10 01:25:27,725 INFO L226 Difference]: Without dead ends: 894 [2022-01-10 01:25:27,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:27,732 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 283 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:27,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 746 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-01-10 01:25:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 892. [2022-01-10 01:25:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.505050505050505) internal successors, (1341), 891 states have internal predecessors, (1341), 0 states have call successors, (0), 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 01:25:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1341 transitions. [2022-01-10 01:25:27,778 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1341 transitions. Word has length 146 [2022-01-10 01:25:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:27,780 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1341 transitions. [2022-01-10 01:25:27,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 01:25:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1341 transitions. [2022-01-10 01:25:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 01:25:27,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:27,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:27,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:25:27,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:27,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2001145712, now seen corresponding path program 1 times [2022-01-10 01:25:27,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:27,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915766437] [2022-01-10 01:25:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:27,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:27,943 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 01:25:27,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:27,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915766437] [2022-01-10 01:25:27,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915766437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:27,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:27,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:27,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371342101] [2022-01-10 01:25:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:27,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:27,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:27,951 INFO L87 Difference]: Start difference. First operand 892 states and 1341 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 01:25:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:28,120 INFO L93 Difference]: Finished difference Result 2611 states and 3916 transitions. [2022-01-10 01:25:28,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:28,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-10 01:25:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:28,125 INFO L225 Difference]: With dead ends: 2611 [2022-01-10 01:25:28,126 INFO L226 Difference]: Without dead ends: 1728 [2022-01-10 01:25:28,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:28,132 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 905 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:28,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 1185 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:28,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-01-10 01:25:28,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2022-01-10 01:25:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 1.488695652173913) internal successors, (2568), 1725 states have internal predecessors, (2568), 0 states have call successors, (0), 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 01:25:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2568 transitions. [2022-01-10 01:25:28,253 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2568 transitions. Word has length 146 [2022-01-10 01:25:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:28,254 INFO L470 AbstractCegarLoop]: Abstraction has 1726 states and 2568 transitions. [2022-01-10 01:25:28,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 01:25:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2568 transitions. [2022-01-10 01:25:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 01:25:28,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:28,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:28,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:25:28,257 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash -153017852, now seen corresponding path program 1 times [2022-01-10 01:25:28,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:28,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276183677] [2022-01-10 01:25:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:28,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:28,310 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 01:25:28,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:28,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276183677] [2022-01-10 01:25:28,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276183677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:28,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:28,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:28,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718634944] [2022-01-10 01:25:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:28,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:28,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:28,312 INFO L87 Difference]: Start difference. First operand 1726 states and 2568 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 01:25:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:28,459 INFO L93 Difference]: Finished difference Result 5140 states and 7642 transitions. [2022-01-10 01:25:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:28,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-01-10 01:25:28,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:28,471 INFO L225 Difference]: With dead ends: 5140 [2022-01-10 01:25:28,471 INFO L226 Difference]: Without dead ends: 3442 [2022-01-10 01:25:28,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:28,479 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 442 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:28,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 963 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-01-10 01:25:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 1728. [2022-01-10 01:25:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.4881297046902142) internal successors, (2570), 1727 states have internal predecessors, (2570), 0 states have call successors, (0), 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 01:25:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2570 transitions. [2022-01-10 01:25:28,609 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2570 transitions. Word has length 147 [2022-01-10 01:25:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:28,609 INFO L470 AbstractCegarLoop]: Abstraction has 1728 states and 2570 transitions. [2022-01-10 01:25:28,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 01:25:28,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2570 transitions. [2022-01-10 01:25:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 01:25:28,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:28,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:28,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:25:28,615 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1214315247, now seen corresponding path program 1 times [2022-01-10 01:25:28,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473569355] [2022-01-10 01:25:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:28,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:28,747 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 01:25:28,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:28,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473569355] [2022-01-10 01:25:28,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473569355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:28,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:28,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:28,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411599243] [2022-01-10 01:25:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:28,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:28,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:28,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:28,748 INFO L87 Difference]: Start difference. First operand 1728 states and 2570 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 01:25:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:29,048 INFO L93 Difference]: Finished difference Result 5036 states and 7470 transitions. [2022-01-10 01:25:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:29,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-01-10 01:25:29,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:29,058 INFO L225 Difference]: With dead ends: 5036 [2022-01-10 01:25:29,058 INFO L226 Difference]: Without dead ends: 3338 [2022-01-10 01:25:29,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:29,063 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 889 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:29,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 1166 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2022-01-10 01:25:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3336. [2022-01-10 01:25:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3335 states have (on average 1.471664167916042) internal successors, (4908), 3335 states have internal predecessors, (4908), 0 states have call successors, (0), 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 01:25:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4908 transitions. [2022-01-10 01:25:29,264 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4908 transitions. Word has length 148 [2022-01-10 01:25:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:29,264 INFO L470 AbstractCegarLoop]: Abstraction has 3336 states and 4908 transitions. [2022-01-10 01:25:29,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 01:25:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4908 transitions. [2022-01-10 01:25:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 01:25:29,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:29,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:29,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:25:29,268 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash 568493541, now seen corresponding path program 1 times [2022-01-10 01:25:29,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:29,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727435818] [2022-01-10 01:25:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:29,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:29,303 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 01:25:29,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:29,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727435818] [2022-01-10 01:25:29,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727435818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:29,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:29,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:29,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818453929] [2022-01-10 01:25:29,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:29,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:29,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:29,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:29,306 INFO L87 Difference]: Start difference. First operand 3336 states and 4908 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 01:25:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:29,636 INFO L93 Difference]: Finished difference Result 9932 states and 14604 transitions. [2022-01-10 01:25:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:29,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-01-10 01:25:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:29,655 INFO L225 Difference]: With dead ends: 9932 [2022-01-10 01:25:29,655 INFO L226 Difference]: Without dead ends: 6640 [2022-01-10 01:25:29,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:29,660 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 428 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:29,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2022-01-10 01:25:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3340. [2022-01-10 01:25:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 3339 states have (on average 1.47109913147649) internal successors, (4912), 3339 states have internal predecessors, (4912), 0 states have call successors, (0), 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 01:25:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4912 transitions. [2022-01-10 01:25:29,885 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4912 transitions. Word has length 149 [2022-01-10 01:25:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:29,885 INFO L470 AbstractCegarLoop]: Abstraction has 3340 states and 4912 transitions. [2022-01-10 01:25:29,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 01:25:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4912 transitions. [2022-01-10 01:25:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 01:25:29,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:29,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:29,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:25:29,889 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1727483410, now seen corresponding path program 1 times [2022-01-10 01:25:29,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:29,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433380007] [2022-01-10 01:25:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:29,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:29,955 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 01:25:29,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:29,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433380007] [2022-01-10 01:25:29,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433380007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:29,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:29,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:29,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360217162] [2022-01-10 01:25:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:29,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:29,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:29,957 INFO L87 Difference]: Start difference. First operand 3340 states and 4912 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 01:25:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:30,407 INFO L93 Difference]: Finished difference Result 9071 states and 13289 transitions. [2022-01-10 01:25:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:30,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-01-10 01:25:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:30,422 INFO L225 Difference]: With dead ends: 9071 [2022-01-10 01:25:30,422 INFO L226 Difference]: Without dead ends: 5779 [2022-01-10 01:25:30,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:30,426 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 884 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:30,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1154 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2022-01-10 01:25:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5777. [2022-01-10 01:25:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5777 states, 5776 states have (on average 1.4485803324099722) internal successors, (8367), 5776 states have internal predecessors, (8367), 0 states have call successors, (0), 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 01:25:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 8367 transitions. [2022-01-10 01:25:30,837 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 8367 transitions. Word has length 150 [2022-01-10 01:25:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:30,838 INFO L470 AbstractCegarLoop]: Abstraction has 5777 states and 8367 transitions. [2022-01-10 01:25:30,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 01:25:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 8367 transitions. [2022-01-10 01:25:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 01:25:30,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:30,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:30,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:25:30,844 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 982054470, now seen corresponding path program 1 times [2022-01-10 01:25:30,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:30,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747646101] [2022-01-10 01:25:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:30,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:30,877 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 01:25:30,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:30,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747646101] [2022-01-10 01:25:30,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747646101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:30,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:30,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:30,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34817853] [2022-01-10 01:25:30,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:30,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:30,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:30,879 INFO L87 Difference]: Start difference. First operand 5777 states and 8367 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 01:25:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:31,572 INFO L93 Difference]: Finished difference Result 16923 states and 24559 transitions. [2022-01-10 01:25:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2022-01-10 01:25:31,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:31,597 INFO L225 Difference]: With dead ends: 16923 [2022-01-10 01:25:31,597 INFO L226 Difference]: Without dead ends: 11462 [2022-01-10 01:25:31,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:31,604 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 414 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:31,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1308 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2022-01-10 01:25:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 5785. [2022-01-10 01:25:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5784 states have (on average 1.4479598893499308) internal successors, (8375), 5784 states have internal predecessors, (8375), 0 states have call successors, (0), 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 01:25:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 8375 transitions. [2022-01-10 01:25:32,072 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 8375 transitions. Word has length 151 [2022-01-10 01:25:32,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:32,072 INFO L470 AbstractCegarLoop]: Abstraction has 5785 states and 8375 transitions. [2022-01-10 01:25:32,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 01:25:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 8375 transitions. [2022-01-10 01:25:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 01:25:32,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:32,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:32,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:25:32,081 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:32,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1043523012, now seen corresponding path program 1 times [2022-01-10 01:25:32,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:32,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598598096] [2022-01-10 01:25:32,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:32,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:32,173 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 01:25:32,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:32,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598598096] [2022-01-10 01:25:32,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598598096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:32,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:32,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:25:32,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376614717] [2022-01-10 01:25:32,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:32,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:25:32,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:32,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:25:32,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:32,175 INFO L87 Difference]: Start difference. First operand 5785 states and 8375 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:33,001 INFO L93 Difference]: Finished difference Result 15762 states and 22719 transitions. [2022-01-10 01:25:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:33,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-01-10 01:25:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:33,018 INFO L225 Difference]: With dead ends: 15762 [2022-01-10 01:25:33,018 INFO L226 Difference]: Without dead ends: 10065 [2022-01-10 01:25:33,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:33,027 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 831 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:33,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 1569 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:25:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-01-10 01:25:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 10063. [2022-01-10 01:25:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10063 states, 10062 states have (on average 1.4234744583581793) internal successors, (14323), 10062 states have internal predecessors, (14323), 0 states have call successors, (0), 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 01:25:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10063 states to 10063 states and 14323 transitions. [2022-01-10 01:25:33,800 INFO L78 Accepts]: Start accepts. Automaton has 10063 states and 14323 transitions. Word has length 152 [2022-01-10 01:25:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:33,800 INFO L470 AbstractCegarLoop]: Abstraction has 10063 states and 14323 transitions. [2022-01-10 01:25:33,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 10063 states and 14323 transitions. [2022-01-10 01:25:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 01:25:33,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:33,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:33,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:25:33,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash -333116525, now seen corresponding path program 1 times [2022-01-10 01:25:33,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:33,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591562359] [2022-01-10 01:25:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:33,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:33,878 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 01:25:33,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591562359] [2022-01-10 01:25:33,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591562359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:33,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:33,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:33,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769020579] [2022-01-10 01:25:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:33,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:33,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:33,880 INFO L87 Difference]: Start difference. First operand 10063 states and 14323 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:34,519 INFO L93 Difference]: Finished difference Result 18550 states and 26416 transitions. [2022-01-10 01:25:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-01-10 01:25:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:34,532 INFO L225 Difference]: With dead ends: 18550 [2022-01-10 01:25:34,533 INFO L226 Difference]: Without dead ends: 8561 [2022-01-10 01:25:34,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:34,540 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 65 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:34,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1390 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8561 states. [2022-01-10 01:25:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8561 to 8561. [2022-01-10 01:25:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8561 states, 8560 states have (on average 1.424766355140187) internal successors, (12196), 8560 states have internal predecessors, (12196), 0 states have call successors, (0), 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 01:25:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 12196 transitions. [2022-01-10 01:25:35,178 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 12196 transitions. Word has length 152 [2022-01-10 01:25:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:35,178 INFO L470 AbstractCegarLoop]: Abstraction has 8561 states and 12196 transitions. [2022-01-10 01:25:35,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:25:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 12196 transitions. [2022-01-10 01:25:35,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 01:25:35,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:35,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:35,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:25:35,188 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:35,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1970649822, now seen corresponding path program 1 times [2022-01-10 01:25:35,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:35,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306839869] [2022-01-10 01:25:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:35,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:35,227 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 01:25:35,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:35,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306839869] [2022-01-10 01:25:35,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306839869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:35,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:35,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:35,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862226026] [2022-01-10 01:25:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:35,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:35,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:35,229 INFO L87 Difference]: Start difference. First operand 8561 states and 12196 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:25:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:36,621 INFO L93 Difference]: Finished difference Result 23111 states and 33322 transitions. [2022-01-10 01:25:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:25:36,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 01:25:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:36,652 INFO L225 Difference]: With dead ends: 23111 [2022-01-10 01:25:36,652 INFO L226 Difference]: Without dead ends: 15939 [2022-01-10 01:25:36,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:25:36,664 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 306 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:36,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 778 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:25:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2022-01-10 01:25:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15937. [2022-01-10 01:25:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15937 states, 15936 states have (on average 1.4254518072289157) internal successors, (22716), 15936 states have internal predecessors, (22716), 0 states have call successors, (0), 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 01:25:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15937 states to 15937 states and 22716 transitions. [2022-01-10 01:25:37,861 INFO L78 Accepts]: Start accepts. Automaton has 15937 states and 22716 transitions. Word has length 158 [2022-01-10 01:25:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:37,861 INFO L470 AbstractCegarLoop]: Abstraction has 15937 states and 22716 transitions. [2022-01-10 01:25:37,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:25:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 15937 states and 22716 transitions. [2022-01-10 01:25:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 01:25:37,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:37,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:37,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:25:37,875 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 242334909, now seen corresponding path program 1 times [2022-01-10 01:25:37,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:37,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055548212] [2022-01-10 01:25:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:37,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:38,148 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 01:25:38,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:38,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055548212] [2022-01-10 01:25:38,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055548212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:38,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:38,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-10 01:25:38,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683821720] [2022-01-10 01:25:38,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:38,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 01:25:38,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 01:25:38,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:25:38,151 INFO L87 Difference]: Start difference. First operand 15937 states and 22716 transitions. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:25:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:42,485 INFO L93 Difference]: Finished difference Result 38117 states and 56645 transitions. [2022-01-10 01:25:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 01:25:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 01:25:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:42,606 INFO L225 Difference]: With dead ends: 38117 [2022-01-10 01:25:42,607 INFO L226 Difference]: Without dead ends: 33279 [2022-01-10 01:25:42,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 01:25:42,618 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 5495 mSDsluCounter, 5282 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5495 SdHoareTripleChecker+Valid, 5888 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:42,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5495 Valid, 5888 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 01:25:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33279 states. [2022-01-10 01:25:44,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33279 to 17685. [2022-01-10 01:25:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17685 states, 17684 states have (on average 1.4060167382945035) internal successors, (24864), 17684 states have internal predecessors, (24864), 0 states have call successors, (0), 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 01:25:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17685 states to 17685 states and 24864 transitions. [2022-01-10 01:25:44,444 INFO L78 Accepts]: Start accepts. Automaton has 17685 states and 24864 transitions. Word has length 158 [2022-01-10 01:25:44,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:44,444 INFO L470 AbstractCegarLoop]: Abstraction has 17685 states and 24864 transitions. [2022-01-10 01:25:44,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:25:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 17685 states and 24864 transitions. [2022-01-10 01:25:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 01:25:44,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:44,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:44,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:25:44,461 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:44,462 INFO L85 PathProgramCache]: Analyzing trace with hash 331313387, now seen corresponding path program 1 times [2022-01-10 01:25:44,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:44,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131906741] [2022-01-10 01:25:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:44,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:44,524 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 01:25:44,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:44,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131906741] [2022-01-10 01:25:44,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131906741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:44,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:44,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:44,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122749234] [2022-01-10 01:25:44,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:44,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:44,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:44,525 INFO L87 Difference]: Start difference. First operand 17685 states and 24864 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:25:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:47,400 INFO L93 Difference]: Finished difference Result 46914 states and 65804 transitions. [2022-01-10 01:25:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:47,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 01:25:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:47,447 INFO L225 Difference]: With dead ends: 46914 [2022-01-10 01:25:47,448 INFO L226 Difference]: Without dead ends: 29375 [2022-01-10 01:25:47,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:47,472 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 890 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:47,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 1162 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29375 states. [2022-01-10 01:25:50,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29375 to 29373. [2022-01-10 01:25:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29373 states, 29372 states have (on average 1.3842434972082256) internal successors, (40658), 29372 states have internal predecessors, (40658), 0 states have call successors, (0), 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 01:25:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29373 states to 29373 states and 40658 transitions. [2022-01-10 01:25:50,734 INFO L78 Accepts]: Start accepts. Automaton has 29373 states and 40658 transitions. Word has length 158 [2022-01-10 01:25:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:50,734 INFO L470 AbstractCegarLoop]: Abstraction has 29373 states and 40658 transitions. [2022-01-10 01:25:50,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 01:25:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 29373 states and 40658 transitions. [2022-01-10 01:25:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 01:25:50,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:50,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:50,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:25:50,758 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1081823353, now seen corresponding path program 1 times [2022-01-10 01:25:50,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:50,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605275128] [2022-01-10 01:25:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:50,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:50,821 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 01:25:50,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:50,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605275128] [2022-01-10 01:25:50,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605275128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:50,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:50,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:25:50,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623798299] [2022-01-10 01:25:50,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:50,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:25:50,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:50,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:25:50,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:25:50,823 INFO L87 Difference]: Start difference. First operand 29373 states and 40658 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 01:25:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:25:54,022 INFO L93 Difference]: Finished difference Result 53333 states and 73756 transitions. [2022-01-10 01:25:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:25:54,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 01:25:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:25:54,058 INFO L225 Difference]: With dead ends: 53333 [2022-01-10 01:25:54,058 INFO L226 Difference]: Without dead ends: 29373 [2022-01-10 01:25:54,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:25:54,076 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 53 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:25:54,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1375 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:25:54,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29373 states. [2022-01-10 01:25:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29373 to 29373. [2022-01-10 01:25:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29373 states, 29372 states have (on average 1.3842094511779925) internal successors, (40657), 29372 states have internal predecessors, (40657), 0 states have call successors, (0), 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 01:25:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29373 states to 29373 states and 40657 transitions. [2022-01-10 01:25:57,436 INFO L78 Accepts]: Start accepts. Automaton has 29373 states and 40657 transitions. Word has length 160 [2022-01-10 01:25:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:25:57,436 INFO L470 AbstractCegarLoop]: Abstraction has 29373 states and 40657 transitions. [2022-01-10 01:25:57,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 01:25:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 29373 states and 40657 transitions. [2022-01-10 01:25:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 01:25:57,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:25:57,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:57,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:25:57,455 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:25:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:25:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -164919766, now seen corresponding path program 1 times [2022-01-10 01:25:57,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:25:57,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256376014] [2022-01-10 01:25:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:25:57,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:25:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:25:57,488 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 01:25:57,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:25:57,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256376014] [2022-01-10 01:25:57,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256376014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:25:57,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:25:57,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:25:57,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111547534] [2022-01-10 01:25:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:25:57,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:25:57,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:25:57,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:25:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:25:57,490 INFO L87 Difference]: Start difference. First operand 29373 states and 40657 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 01:26:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:26:02,458 INFO L93 Difference]: Finished difference Result 72703 states and 100699 transitions. [2022-01-10 01:26:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:26:02,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 01:26:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:26:02,523 INFO L225 Difference]: With dead ends: 72703 [2022-01-10 01:26:02,523 INFO L226 Difference]: Without dead ends: 45451 [2022-01-10 01:26:02,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 01:26:02,552 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 374 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:26:02,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1219 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:26:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45451 states. [2022-01-10 01:26:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45451 to 45449. [2022-01-10 01:26:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45449 states, 45448 states have (on average 1.3621501496215456) internal successors, (61907), 45448 states have internal predecessors, (61907), 0 states have call successors, (0), 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 01:26:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45449 states to 45449 states and 61907 transitions. [2022-01-10 01:26:07,595 INFO L78 Accepts]: Start accepts. Automaton has 45449 states and 61907 transitions. Word has length 160 [2022-01-10 01:26:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:26:07,595 INFO L470 AbstractCegarLoop]: Abstraction has 45449 states and 61907 transitions. [2022-01-10 01:26:07,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 01:26:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 45449 states and 61907 transitions. [2022-01-10 01:26:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 01:26:07,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:26:07,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:07,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:26:07,628 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:26:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:26:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1341734995, now seen corresponding path program 1 times [2022-01-10 01:26:07,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:26:07,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427223960] [2022-01-10 01:26:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:26:07,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:26:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:26:07,713 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 01:26:07,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:26:07,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427223960] [2022-01-10 01:26:07,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427223960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:26:07,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:26:07,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:26:07,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750096693] [2022-01-10 01:26:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:26:07,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:26:07,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:26:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:26:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:26:07,715 INFO L87 Difference]: Start difference. First operand 45449 states and 61907 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:26:17,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:26:17,143 INFO L93 Difference]: Finished difference Result 103163 states and 145175 transitions. [2022-01-10 01:26:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:26:17,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-01-10 01:26:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:26:17,261 INFO L225 Difference]: With dead ends: 103163 [2022-01-10 01:26:17,261 INFO L226 Difference]: Without dead ends: 84409 [2022-01-10 01:26:17,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:26:17,296 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 799 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:26:17,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 842 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:26:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84409 states. [2022-01-10 01:26:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84409 to 84407. [2022-01-10 01:26:27,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84407 states, 84406 states have (on average 1.3668815013150724) internal successors, (115373), 84406 states have internal predecessors, (115373), 0 states have call successors, (0), 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 01:26:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84407 states to 84407 states and 115373 transitions. [2022-01-10 01:26:27,173 INFO L78 Accepts]: Start accepts. Automaton has 84407 states and 115373 transitions. Word has length 166 [2022-01-10 01:26:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:26:27,174 INFO L470 AbstractCegarLoop]: Abstraction has 84407 states and 115373 transitions. [2022-01-10 01:26:27,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 01:26:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 84407 states and 115373 transitions. [2022-01-10 01:26:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 01:26:27,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:26:27,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:27,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:26:27,404 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:26:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:26:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1507391155, now seen corresponding path program 1 times [2022-01-10 01:26:27,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:26:27,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504039016] [2022-01-10 01:26:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:26:27,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:26:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:26:27,501 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 01:26:27,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:26:27,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504039016] [2022-01-10 01:26:27,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504039016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:26:27,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:26:27,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:26:27,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520665751] [2022-01-10 01:26:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:26:27,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:26:27,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:26:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:26:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:26:27,503 INFO L87 Difference]: Start difference. First operand 84407 states and 115373 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)