/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_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:40:41,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:40:41,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:40:41,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:40:41,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:40:41,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:40:41,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:40:41,742 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 01:40:41,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:40:41,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:40:41,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:40:41,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:40:41,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:40:41,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:40:41,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:40:41,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:40:41,759 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:40:41,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:40:41,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:40:41,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:40:41,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:40:41,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:40:41,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:40:41,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:40:41,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:40:41,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:40:41,762 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:40:41,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:40:41,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:40:41,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:40:41,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:40:41,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:40:41,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:40:41,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:40:41,961 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:40:41,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:40:42,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a6911c8/b690637c370e4f4387a2983da3acec96/FLAG638e171eb [2022-01-10 01:40:42,433 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:40:42,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:40:42,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a6911c8/b690637c370e4f4387a2983da3acec96/FLAG638e171eb [2022-01-10 01:40:42,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a6911c8/b690637c370e4f4387a2983da3acec96 [2022-01-10 01:40:42,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:40:42,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:40:42,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:40:42,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:40:42,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:40:42,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:40:42" (1/1) ... [2022-01-10 01:40:42,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ead646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:42, skipping insertion in model container [2022-01-10 01:40:42,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:40:42" (1/1) ... [2022-01-10 01:40:42,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:40:42,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:40:43,064 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_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2022-01-10 01:40:43,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:40:43,127 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:40:43,177 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_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2022-01-10 01:40:43,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:40:43,220 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:40:43,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43 WrapperNode [2022-01-10 01:40:43,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:40:43,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:40:43,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:40:43,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:40:43,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,279 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 731 [2022-01-10 01:40:43,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:40:43,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:40:43,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:40:43,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:40:43,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:40:43,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:40:43,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:40:43,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:40:43,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (1/1) ... [2022-01-10 01:40:43,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:40:43,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:40:43,395 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 01:40:43,396 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 01:40:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:40:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:40:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:40:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:40:43,568 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:40:43,569 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:40:44,029 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:40:44,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:40:44,035 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:40:44,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:40:44 BoogieIcfgContainer [2022-01-10 01:40:44,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:40:44,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:40:44,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:40:44,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:40:44,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:40:42" (1/3) ... [2022-01-10 01:40:44,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5779c1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:40:44, skipping insertion in model container [2022-01-10 01:40:44,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:43" (2/3) ... [2022-01-10 01:40:44,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5779c1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:40:44, skipping insertion in model container [2022-01-10 01:40:44,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:40:44" (3/3) ... [2022-01-10 01:40:44,042 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:40:44,045 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:40:44,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:40:44,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:40:44,077 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 01:40:44,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:40:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 0 states have call successors, (0), 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 01:40:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:40:44,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:44,103 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] [2022-01-10 01:40:44,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash -822713823, now seen corresponding path program 1 times [2022-01-10 01:40:44,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:44,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067919836] [2022-01-10 01:40:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:44,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:44,386 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 01:40:44,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:44,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067919836] [2022-01-10 01:40:44,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067919836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:44,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:44,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:44,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265560741] [2022-01-10 01:40:44,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:44,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:44,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:44,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:44,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:44,410 INFO L87 Difference]: Start difference. First operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:40:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:44,836 INFO L93 Difference]: Finished difference Result 1131 states and 1831 transitions. [2022-01-10 01:40:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:40:44,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 01:40:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:44,855 INFO L225 Difference]: With dead ends: 1131 [2022-01-10 01:40:44,856 INFO L226 Difference]: Without dead ends: 1036 [2022-01-10 01:40:44,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:40:44,865 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 2265 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:44,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2265 Valid, 3100 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:40:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-01-10 01:40:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 269. [2022-01-10 01:40:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.458955223880597) internal successors, (391), 268 states have internal predecessors, (391), 0 states have call successors, (0), 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 01:40:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 391 transitions. [2022-01-10 01:40:44,945 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 391 transitions. Word has length 90 [2022-01-10 01:40:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:44,945 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 391 transitions. [2022-01-10 01:40:44,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 01:40:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 391 transitions. [2022-01-10 01:40:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:44,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:44,952 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] [2022-01-10 01:40:44,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:40:44,953 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1483332975, now seen corresponding path program 1 times [2022-01-10 01:40:44,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973835409] [2022-01-10 01:40:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:44,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:45,113 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 01:40:45,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:45,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973835409] [2022-01-10 01:40:45,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973835409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:45,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:45,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:45,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657946692] [2022-01-10 01:40:45,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:45,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:45,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:45,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:45,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:45,118 INFO L87 Difference]: Start difference. First operand 269 states and 391 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:45,368 INFO L93 Difference]: Finished difference Result 1235 states and 1925 transitions. [2022-01-10 01:40:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:40:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:45,374 INFO L225 Difference]: With dead ends: 1235 [2022-01-10 01:40:45,375 INFO L226 Difference]: Without dead ends: 1095 [2022-01-10 01:40:45,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:40:45,380 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1605 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:45,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 1854 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-01-10 01:40:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 428. [2022-01-10 01:40:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5105386416861826) internal successors, (645), 427 states have internal predecessors, (645), 0 states have call successors, (0), 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 01:40:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 645 transitions. [2022-01-10 01:40:45,454 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 645 transitions. Word has length 92 [2022-01-10 01:40:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:45,455 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 645 transitions. [2022-01-10 01:40:45,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 645 transitions. [2022-01-10 01:40:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:45,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:45,459 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] [2022-01-10 01:40:45,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:40:45,459 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1617802447, now seen corresponding path program 1 times [2022-01-10 01:40:45,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393181697] [2022-01-10 01:40:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:45,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:45,559 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 01:40:45,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:45,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393181697] [2022-01-10 01:40:45,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393181697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:45,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:45,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:45,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422913694] [2022-01-10 01:40:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:45,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:45,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:45,561 INFO L87 Difference]: Start difference. First operand 428 states and 645 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:45,752 INFO L93 Difference]: Finished difference Result 1389 states and 2171 transitions. [2022-01-10 01:40:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:40:45,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:45,757 INFO L225 Difference]: With dead ends: 1389 [2022-01-10 01:40:45,757 INFO L226 Difference]: Without dead ends: 1249 [2022-01-10 01:40:45,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:40:45,764 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 1908 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:45,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 1591 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-01-10 01:40:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 641. [2022-01-10 01:40:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.5390625) internal successors, (985), 640 states have internal predecessors, (985), 0 states have call successors, (0), 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 01:40:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 985 transitions. [2022-01-10 01:40:45,813 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 985 transitions. Word has length 92 [2022-01-10 01:40:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:45,814 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 985 transitions. [2022-01-10 01:40:45,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 985 transitions. [2022-01-10 01:40:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:45,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:45,817 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] [2022-01-10 01:40:45,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:40:45,818 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1906062023, now seen corresponding path program 1 times [2022-01-10 01:40:45,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:45,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155834753] [2022-01-10 01:40:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:45,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:45,986 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 01:40:45,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:45,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155834753] [2022-01-10 01:40:45,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155834753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:45,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:45,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:45,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207523642] [2022-01-10 01:40:45,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:45,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:45,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:45,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:45,988 INFO L87 Difference]: Start difference. First operand 641 states and 985 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:46,201 INFO L93 Difference]: Finished difference Result 1528 states and 2393 transitions. [2022-01-10 01:40:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:40:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:46,206 INFO L225 Difference]: With dead ends: 1528 [2022-01-10 01:40:46,206 INFO L226 Difference]: Without dead ends: 1388 [2022-01-10 01:40:46,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:40:46,211 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 2019 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:46,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2019 Valid, 1591 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-01-10 01:40:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 780. [2022-01-10 01:40:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 1.5494223363286264) internal successors, (1207), 779 states have internal predecessors, (1207), 0 states have call successors, (0), 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 01:40:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1207 transitions. [2022-01-10 01:40:46,297 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1207 transitions. Word has length 92 [2022-01-10 01:40:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:46,297 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1207 transitions. [2022-01-10 01:40:46,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1207 transitions. [2022-01-10 01:40:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:46,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:46,299 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] [2022-01-10 01:40:46,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:40:46,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash 614894983, now seen corresponding path program 1 times [2022-01-10 01:40:46,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:46,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838595676] [2022-01-10 01:40:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:46,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:46,357 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 01:40:46,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:46,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838595676] [2022-01-10 01:40:46,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838595676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:46,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:46,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:46,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291940681] [2022-01-10 01:40:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:46,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:46,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:46,359 INFO L87 Difference]: Start difference. First operand 780 states and 1207 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:46,498 INFO L93 Difference]: Finished difference Result 1968 states and 3097 transitions. [2022-01-10 01:40:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:46,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:46,502 INFO L225 Difference]: With dead ends: 1968 [2022-01-10 01:40:46,502 INFO L226 Difference]: Without dead ends: 1345 [2022-01-10 01:40:46,503 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 01:40:46,504 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 99 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:46,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 559 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-01-10 01:40:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1325. [2022-01-10 01:40:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.5521148036253776) internal successors, (2055), 1324 states have internal predecessors, (2055), 0 states have call successors, (0), 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 01:40:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2055 transitions. [2022-01-10 01:40:46,654 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2055 transitions. Word has length 92 [2022-01-10 01:40:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:46,655 INFO L470 AbstractCegarLoop]: Abstraction has 1325 states and 2055 transitions. [2022-01-10 01:40:46,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2055 transitions. [2022-01-10 01:40:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:46,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:46,656 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] [2022-01-10 01:40:46,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:40:46,656 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash 858972646, now seen corresponding path program 1 times [2022-01-10 01:40:46,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:46,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744261062] [2022-01-10 01:40:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:46,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:46,718 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 01:40:46,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:46,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744261062] [2022-01-10 01:40:46,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744261062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:46,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:46,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:46,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435885814] [2022-01-10 01:40:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:46,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:46,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:46,721 INFO L87 Difference]: Start difference. First operand 1325 states and 2055 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:46,881 INFO L93 Difference]: Finished difference Result 2495 states and 3900 transitions. [2022-01-10 01:40:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:46,885 INFO L225 Difference]: With dead ends: 2495 [2022-01-10 01:40:46,885 INFO L226 Difference]: Without dead ends: 1327 [2022-01-10 01:40:46,886 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 01:40:46,887 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 125 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:46,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 541 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-01-10 01:40:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1325. [2022-01-10 01:40:47,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.5483383685800605) internal successors, (2050), 1324 states have internal predecessors, (2050), 0 states have call successors, (0), 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 01:40:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2050 transitions. [2022-01-10 01:40:47,013 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2050 transitions. Word has length 92 [2022-01-10 01:40:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:47,013 INFO L470 AbstractCegarLoop]: Abstraction has 1325 states and 2050 transitions. [2022-01-10 01:40:47,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2050 transitions. [2022-01-10 01:40:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:47,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:47,014 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] [2022-01-10 01:40:47,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:40:47,014 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1799043301, now seen corresponding path program 1 times [2022-01-10 01:40:47,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:47,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487380855] [2022-01-10 01:40:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:47,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:47,079 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 01:40:47,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:47,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487380855] [2022-01-10 01:40:47,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487380855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:47,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:47,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:47,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491476408] [2022-01-10 01:40:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:47,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:47,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:47,081 INFO L87 Difference]: Start difference. First operand 1325 states and 2050 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:47,389 INFO L93 Difference]: Finished difference Result 2943 states and 4594 transitions. [2022-01-10 01:40:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:40:47,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:47,396 INFO L225 Difference]: With dead ends: 2943 [2022-01-10 01:40:47,396 INFO L226 Difference]: Without dead ends: 2682 [2022-01-10 01:40:47,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:40:47,398 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 1557 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:47,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 1901 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-01-10 01:40:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1595. [2022-01-10 01:40:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.552697616060226) internal successors, (2475), 1594 states have internal predecessors, (2475), 0 states have call successors, (0), 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 01:40:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2475 transitions. [2022-01-10 01:40:47,529 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2475 transitions. Word has length 92 [2022-01-10 01:40:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:47,530 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 2475 transitions. [2022-01-10 01:40:47,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2475 transitions. [2022-01-10 01:40:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:47,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:47,531 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] [2022-01-10 01:40:47,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:40:47,531 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1982868957, now seen corresponding path program 1 times [2022-01-10 01:40:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:47,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775418989] [2022-01-10 01:40:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:47,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:47,612 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 01:40:47,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775418989] [2022-01-10 01:40:47,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775418989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:47,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:47,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:47,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129970024] [2022-01-10 01:40:47,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:47,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:47,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:47,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:47,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:47,614 INFO L87 Difference]: Start difference. First operand 1595 states and 2475 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:47,974 INFO L93 Difference]: Finished difference Result 3213 states and 5019 transitions. [2022-01-10 01:40:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:40:47,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:47,982 INFO L225 Difference]: With dead ends: 3213 [2022-01-10 01:40:47,982 INFO L226 Difference]: Without dead ends: 2952 [2022-01-10 01:40:47,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:40:47,983 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 1752 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:47,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 2283 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-01-10 01:40:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1870. [2022-01-10 01:40:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.555912252541466) internal successors, (2908), 1869 states have internal predecessors, (2908), 0 states have call successors, (0), 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 01:40:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2908 transitions. [2022-01-10 01:40:48,222 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2908 transitions. Word has length 92 [2022-01-10 01:40:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:48,222 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 2908 transitions. [2022-01-10 01:40:48,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2908 transitions. [2022-01-10 01:40:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:40:48,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:48,223 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] [2022-01-10 01:40:48,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:40:48,224 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:48,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash -820597111, now seen corresponding path program 1 times [2022-01-10 01:40:48,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:48,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151825632] [2022-01-10 01:40:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:48,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:48,299 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 01:40:48,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:48,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151825632] [2022-01-10 01:40:48,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151825632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:48,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:48,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:48,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037893214] [2022-01-10 01:40:48,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:48,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:48,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:48,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:48,301 INFO L87 Difference]: Start difference. First operand 1870 states and 2908 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:48,694 INFO L93 Difference]: Finished difference Result 3493 states and 5460 transitions. [2022-01-10 01:40:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:40:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 01:40:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:48,703 INFO L225 Difference]: With dead ends: 3493 [2022-01-10 01:40:48,703 INFO L226 Difference]: Without dead ends: 3232 [2022-01-10 01:40:48,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:40:48,706 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 2004 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:48,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2004 Valid, 1924 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:48,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2022-01-10 01:40:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 2150. [2022-01-10 01:40:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5583992554676593) internal successors, (3349), 2149 states have internal predecessors, (3349), 0 states have call successors, (0), 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 01:40:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3349 transitions. [2022-01-10 01:40:48,931 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3349 transitions. Word has length 92 [2022-01-10 01:40:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:48,931 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 3349 transitions. [2022-01-10 01:40:48,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:40:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3349 transitions. [2022-01-10 01:40:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 01:40:48,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:48,932 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] [2022-01-10 01:40:48,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:40:48,932 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:48,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:48,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2115523499, now seen corresponding path program 1 times [2022-01-10 01:40:48,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:48,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991696471] [2022-01-10 01:40:48,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:48,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:48,981 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 01:40:48,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:48,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991696471] [2022-01-10 01:40:48,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991696471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:48,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:48,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:40:48,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947615425] [2022-01-10 01:40:48,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:48,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:40:48,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:40:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:40:48,983 INFO L87 Difference]: Start difference. First operand 2150 states and 3349 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 01:40:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:49,296 INFO L93 Difference]: Finished difference Result 4250 states and 6646 transitions. [2022-01-10 01:40:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:40:49,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 01:40:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:49,307 INFO L225 Difference]: With dead ends: 4250 [2022-01-10 01:40:49,308 INFO L226 Difference]: Without dead ends: 2150 [2022-01-10 01:40:49,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:40:49,312 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 645 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:49,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 140 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-01-10 01:40:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-01-10 01:40:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5439739413680782) internal successors, (3318), 2149 states have internal predecessors, (3318), 0 states have call successors, (0), 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 01:40:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3318 transitions. [2022-01-10 01:40:49,539 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3318 transitions. Word has length 93 [2022-01-10 01:40:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:49,539 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 3318 transitions. [2022-01-10 01:40:49,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 01:40:49,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3318 transitions. [2022-01-10 01:40:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 01:40:49,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:49,540 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] [2022-01-10 01:40:49,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:40:49,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1622736142, now seen corresponding path program 1 times [2022-01-10 01:40:49,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:49,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582579993] [2022-01-10 01:40:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:49,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:49,608 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 01:40:49,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:49,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582579993] [2022-01-10 01:40:49,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582579993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:49,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:49,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:40:49,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403435834] [2022-01-10 01:40:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:49,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:40:49,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:40:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:40:49,609 INFO L87 Difference]: Start difference. First operand 2150 states and 3318 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 01:40:50,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:50,307 INFO L93 Difference]: Finished difference Result 6296 states and 9773 transitions. [2022-01-10 01:40:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:40:50,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 01:40:50,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:50,319 INFO L225 Difference]: With dead ends: 6296 [2022-01-10 01:40:50,319 INFO L226 Difference]: Without dead ends: 4192 [2022-01-10 01:40:50,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:40:50,322 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 950 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:50,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 213 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:40:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2022-01-10 01:40:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 4190. [2022-01-10 01:40:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5445213654810217) internal successors, (6470), 4189 states have internal predecessors, (6470), 0 states have call successors, (0), 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 01:40:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6470 transitions. [2022-01-10 01:40:50,762 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6470 transitions. Word has length 94 [2022-01-10 01:40:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:50,762 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6470 transitions. [2022-01-10 01:40:50,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 01:40:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6470 transitions. [2022-01-10 01:40:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 01:40:50,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:50,763 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] [2022-01-10 01:40:50,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:40:50,763 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:50,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -514732393, now seen corresponding path program 1 times [2022-01-10 01:40:50,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:50,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446311257] [2022-01-10 01:40:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:50,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:50,825 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 01:40:50,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446311257] [2022-01-10 01:40:50,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446311257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:50,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:50,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:40:50,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625567114] [2022-01-10 01:40:50,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:50,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:40:50,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:40:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:40:50,826 INFO L87 Difference]: Start difference. First operand 4190 states and 6470 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 01:40:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:51,373 INFO L93 Difference]: Finished difference Result 8318 states and 12875 transitions. [2022-01-10 01:40:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:40:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 01:40:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:51,384 INFO L225 Difference]: With dead ends: 8318 [2022-01-10 01:40:51,384 INFO L226 Difference]: Without dead ends: 4190 [2022-01-10 01:40:51,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:40:51,388 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 601 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:51,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 164 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-01-10 01:40:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-01-10 01:40:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5299594175220816) internal successors, (6409), 4189 states have internal predecessors, (6409), 0 states have call successors, (0), 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 01:40:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6409 transitions. [2022-01-10 01:40:51,851 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6409 transitions. Word has length 95 [2022-01-10 01:40:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:51,851 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6409 transitions. [2022-01-10 01:40:51,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 01:40:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6409 transitions. [2022-01-10 01:40:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 01:40:51,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:51,853 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] [2022-01-10 01:40:51,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:40:51,853 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1777645674, now seen corresponding path program 1 times [2022-01-10 01:40:51,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:51,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517029825] [2022-01-10 01:40:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:51,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:51,892 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 01:40:51,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:51,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517029825] [2022-01-10 01:40:51,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517029825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:51,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:51,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:40:51,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992898190] [2022-01-10 01:40:51,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:51,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:40:51,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:51,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:40:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:40:51,894 INFO L87 Difference]: Start difference. First operand 4190 states and 6409 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:52,532 INFO L93 Difference]: Finished difference Result 8322 states and 12758 transitions. [2022-01-10 01:40:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:40:52,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-01-10 01:40:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:52,540 INFO L225 Difference]: With dead ends: 8322 [2022-01-10 01:40:52,540 INFO L226 Difference]: Without dead ends: 4190 [2022-01-10 01:40:52,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:40:52,545 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 606 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:52,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 156 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-01-10 01:40:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-01-10 01:40:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5153974695631416) internal successors, (6348), 4189 states have internal predecessors, (6348), 0 states have call successors, (0), 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 01:40:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6348 transitions. [2022-01-10 01:40:53,006 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6348 transitions. Word has length 96 [2022-01-10 01:40:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:53,006 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6348 transitions. [2022-01-10 01:40:53,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6348 transitions. [2022-01-10 01:40:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:40:53,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:53,007 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] [2022-01-10 01:40:53,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:40:53,008 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash -341822485, now seen corresponding path program 1 times [2022-01-10 01:40:53,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:53,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475037447] [2022-01-10 01:40:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:53,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:53,044 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 01:40:53,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475037447] [2022-01-10 01:40:53,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475037447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:53,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:53,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:40:53,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610240362] [2022-01-10 01:40:53,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:53,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:40:53,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:53,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:40:53,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:40:53,046 INFO L87 Difference]: Start difference. First operand 4190 states and 6348 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 01:40:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:53,580 INFO L93 Difference]: Finished difference Result 8326 states and 12641 transitions. [2022-01-10 01:40:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:40:53,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 01:40:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:53,587 INFO L225 Difference]: With dead ends: 8326 [2022-01-10 01:40:53,587 INFO L226 Difference]: Without dead ends: 4190 [2022-01-10 01:40:53,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:40:53,590 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 611 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:53,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 148 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-01-10 01:40:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-01-10 01:40:54,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.5008355216042015) internal successors, (6287), 4189 states have internal predecessors, (6287), 0 states have call successors, (0), 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 01:40:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6287 transitions. [2022-01-10 01:40:54,063 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6287 transitions. Word has length 97 [2022-01-10 01:40:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:54,063 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6287 transitions. [2022-01-10 01:40:54,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 01:40:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6287 transitions. [2022-01-10 01:40:54,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 01:40:54,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:54,064 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] [2022-01-10 01:40:54,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:40:54,065 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:54,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash 331898154, now seen corresponding path program 1 times [2022-01-10 01:40:54,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:54,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401783369] [2022-01-10 01:40:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:54,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:54,100 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 01:40:54,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401783369] [2022-01-10 01:40:54,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401783369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:54,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:54,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:40:54,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772745127] [2022-01-10 01:40:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:54,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:40:54,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:40:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:40:54,101 INFO L87 Difference]: Start difference. First operand 4190 states and 6287 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 01:40:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:54,645 INFO L93 Difference]: Finished difference Result 8314 states and 12507 transitions. [2022-01-10 01:40:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:40:54,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-10 01:40:54,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:54,653 INFO L225 Difference]: With dead ends: 8314 [2022-01-10 01:40:54,653 INFO L226 Difference]: Without dead ends: 4190 [2022-01-10 01:40:54,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:40:54,658 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 569 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:54,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 172 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2022-01-10 01:40:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4190. [2022-01-10 01:40:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4862735736452615) internal successors, (6226), 4189 states have internal predecessors, (6226), 0 states have call successors, (0), 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 01:40:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6226 transitions. [2022-01-10 01:40:55,154 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6226 transitions. Word has length 98 [2022-01-10 01:40:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:55,154 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6226 transitions. [2022-01-10 01:40:55,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 01:40:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6226 transitions. [2022-01-10 01:40:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 01:40:55,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:55,156 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] [2022-01-10 01:40:55,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:40:55,156 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash 19008367, now seen corresponding path program 1 times [2022-01-10 01:40:55,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:55,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191083464] [2022-01-10 01:40:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:55,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:55,394 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 01:40:55,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:55,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191083464] [2022-01-10 01:40:55,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191083464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:55,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:55,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:40:55,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000308146] [2022-01-10 01:40:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:55,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 01:40:55,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 01:40:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:40:55,395 INFO L87 Difference]: Start difference. First operand 4190 states and 6226 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:57,227 INFO L93 Difference]: Finished difference Result 12342 states and 18330 transitions. [2022-01-10 01:40:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:40:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 01:40:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:57,239 INFO L225 Difference]: With dead ends: 12342 [2022-01-10 01:40:57,239 INFO L226 Difference]: Without dead ends: 8341 [2022-01-10 01:40:57,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:40:57,244 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 1601 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:57,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 689 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:40:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2022-01-10 01:40:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 4190. [2022-01-10 01:40:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4841250895201719) internal successors, (6217), 4189 states have internal predecessors, (6217), 0 states have call successors, (0), 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 01:40:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6217 transitions. [2022-01-10 01:40:57,876 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6217 transitions. Word has length 99 [2022-01-10 01:40:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:57,876 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6217 transitions. [2022-01-10 01:40:57,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6217 transitions. [2022-01-10 01:40:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:40:57,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:57,877 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] [2022-01-10 01:40:57,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:40:57,878 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1836312485, now seen corresponding path program 1 times [2022-01-10 01:40:57,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:57,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220883774] [2022-01-10 01:40:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:57,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:57,989 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 01:40:57,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220883774] [2022-01-10 01:40:57,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220883774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:57,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:57,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:57,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681079673] [2022-01-10 01:40:57,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:57,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:40:57,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:40:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:40:57,990 INFO L87 Difference]: Start difference. First operand 4190 states and 6217 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:59,594 INFO L93 Difference]: Finished difference Result 12076 states and 17967 transitions. [2022-01-10 01:40:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:40:59,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 01:40:59,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:59,607 INFO L225 Difference]: With dead ends: 12076 [2022-01-10 01:40:59,607 INFO L226 Difference]: Without dead ends: 8091 [2022-01-10 01:40:59,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:40:59,611 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 1674 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:59,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 392 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:40:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2022-01-10 01:41:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 4190. [2022-01-10 01:41:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4838863690618287) internal successors, (6216), 4189 states have internal predecessors, (6216), 0 states have call successors, (0), 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 01:41:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6216 transitions. [2022-01-10 01:41:00,309 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6216 transitions. Word has length 100 [2022-01-10 01:41:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:00,309 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6216 transitions. [2022-01-10 01:41:00,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6216 transitions. [2022-01-10 01:41:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:41:00,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:00,312 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] [2022-01-10 01:41:00,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:41:00,313 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash -332342721, now seen corresponding path program 1 times [2022-01-10 01:41:00,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:00,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976636050] [2022-01-10 01:41:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:00,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:00,472 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 01:41:00,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:00,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976636050] [2022-01-10 01:41:00,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976636050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:00,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:00,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:41:00,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029282928] [2022-01-10 01:41:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:00,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:41:00,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:00,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:41:00,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:41:00,474 INFO L87 Difference]: Start difference. First operand 4190 states and 6216 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:01,897 INFO L93 Difference]: Finished difference Result 8870 states and 13143 transitions. [2022-01-10 01:41:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:41:01,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-01-10 01:41:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:01,905 INFO L225 Difference]: With dead ends: 8870 [2022-01-10 01:41:01,905 INFO L226 Difference]: Without dead ends: 4824 [2022-01-10 01:41:01,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:41:01,910 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 1229 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:01,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1229 Valid, 841 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:41:01,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2022-01-10 01:41:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4190. [2022-01-10 01:41:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4831702076867987) internal successors, (6213), 4189 states have internal predecessors, (6213), 0 states have call successors, (0), 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 01:41:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6213 transitions. [2022-01-10 01:41:02,654 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6213 transitions. Word has length 100 [2022-01-10 01:41:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:02,654 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6213 transitions. [2022-01-10 01:41:02,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6213 transitions. [2022-01-10 01:41:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:41:02,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:02,655 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] [2022-01-10 01:41:02,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:41:02,656 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash -60484552, now seen corresponding path program 1 times [2022-01-10 01:41:02,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:02,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300249027] [2022-01-10 01:41:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:02,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:02,784 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 01:41:02,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300249027] [2022-01-10 01:41:02,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300249027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:02,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:02,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:41:02,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631747491] [2022-01-10 01:41:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:02,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:41:02,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:41:02,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:41:02,786 INFO L87 Difference]: Start difference. First operand 4190 states and 6213 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 01:41:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:04,921 INFO L93 Difference]: Finished difference Result 12387 states and 18377 transitions. [2022-01-10 01:41:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:41:04,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 01:41:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:04,942 INFO L225 Difference]: With dead ends: 12387 [2022-01-10 01:41:04,942 INFO L226 Difference]: Without dead ends: 8356 [2022-01-10 01:41:04,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:41:04,949 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1510 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:04,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 659 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:41:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8356 states. [2022-01-10 01:41:05,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8356 to 4190. [2022-01-10 01:41:05,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.481737884936739) internal successors, (6207), 4189 states have internal predecessors, (6207), 0 states have call successors, (0), 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 01:41:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6207 transitions. [2022-01-10 01:41:05,829 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6207 transitions. Word has length 101 [2022-01-10 01:41:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:05,829 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6207 transitions. [2022-01-10 01:41:05,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 01:41:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6207 transitions. [2022-01-10 01:41:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 01:41:05,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:05,830 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] [2022-01-10 01:41:05,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:41:05,830 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash -427226295, now seen corresponding path program 1 times [2022-01-10 01:41:05,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:05,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803537792] [2022-01-10 01:41:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:05,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:05,982 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 01:41:05,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:05,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803537792] [2022-01-10 01:41:05,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803537792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:05,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:05,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:41:05,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811365215] [2022-01-10 01:41:05,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:05,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:41:05,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:05,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:41:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:41:05,984 INFO L87 Difference]: Start difference. First operand 4190 states and 6207 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:41:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:08,232 INFO L93 Difference]: Finished difference Result 12267 states and 18191 transitions. [2022-01-10 01:41:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:41:08,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-10 01:41:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:08,242 INFO L225 Difference]: With dead ends: 12267 [2022-01-10 01:41:08,242 INFO L226 Difference]: Without dead ends: 8311 [2022-01-10 01:41:08,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:41:08,248 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1457 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:08,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 637 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:41:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2022-01-10 01:41:09,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 4190. [2022-01-10 01:41:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.479111959894963) internal successors, (6196), 4189 states have internal predecessors, (6196), 0 states have call successors, (0), 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 01:41:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6196 transitions. [2022-01-10 01:41:09,172 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6196 transitions. Word has length 102 [2022-01-10 01:41:09,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:09,172 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6196 transitions. [2022-01-10 01:41:09,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 01:41:09,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6196 transitions. [2022-01-10 01:41:09,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 01:41:09,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:09,173 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] [2022-01-10 01:41:09,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:41:09,173 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1548711228, now seen corresponding path program 1 times [2022-01-10 01:41:09,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:09,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863203979] [2022-01-10 01:41:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:09,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:09,318 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 01:41:09,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863203979] [2022-01-10 01:41:09,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863203979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:09,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:09,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:41:09,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200256468] [2022-01-10 01:41:09,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:09,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:41:09,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:09,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:41:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:41:09,319 INFO L87 Difference]: Start difference. First operand 4190 states and 6196 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 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 01:41:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:11,685 INFO L93 Difference]: Finished difference Result 12167 states and 18020 transitions. [2022-01-10 01:41:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:41:11,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-10 01:41:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:11,695 INFO L225 Difference]: With dead ends: 12167 [2022-01-10 01:41:11,695 INFO L226 Difference]: Without dead ends: 8266 [2022-01-10 01:41:11,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:41:11,699 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 746 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:11,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 649 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:41:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2022-01-10 01:41:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 4190. [2022-01-10 01:41:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 1.4760085939365004) internal successors, (6183), 4189 states have internal predecessors, (6183), 0 states have call successors, (0), 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 01:41:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6183 transitions. [2022-01-10 01:41:12,712 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6183 transitions. Word has length 103 [2022-01-10 01:41:12,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:12,712 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 6183 transitions. [2022-01-10 01:41:12,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 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 01:41:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6183 transitions. [2022-01-10 01:41:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 01:41:12,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:12,714 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] [2022-01-10 01:41:12,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:41:12,714 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1323186080, now seen corresponding path program 1 times [2022-01-10 01:41:12,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:12,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135460741] [2022-01-10 01:41:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:12,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:13,050 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 01:41:13,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:13,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135460741] [2022-01-10 01:41:13,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135460741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:13,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:13,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 01:41:13,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136877715] [2022-01-10 01:41:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:13,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:41:13,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:41:13,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:41:13,052 INFO L87 Difference]: Start difference. First operand 4190 states and 6183 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:41:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:18,138 INFO L93 Difference]: Finished difference Result 14771 states and 21918 transitions. [2022-01-10 01:41:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 01:41:18,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 01:41:18,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:18,155 INFO L225 Difference]: With dead ends: 14771 [2022-01-10 01:41:18,155 INFO L226 Difference]: Without dead ends: 13654 [2022-01-10 01:41:18,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-01-10 01:41:18,160 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1586 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:18,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1586 Valid, 4454 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:41:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2022-01-10 01:41:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 4138. [2022-01-10 01:41:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 1.47643219724438) internal successors, (6108), 4137 states have internal predecessors, (6108), 0 states have call successors, (0), 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 01:41:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 6108 transitions. [2022-01-10 01:41:19,470 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 6108 transitions. Word has length 104 [2022-01-10 01:41:19,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:19,470 INFO L470 AbstractCegarLoop]: Abstraction has 4138 states and 6108 transitions. [2022-01-10 01:41:19,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:41:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 6108 transitions. [2022-01-10 01:41:19,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 01:41:19,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:19,471 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] [2022-01-10 01:41:19,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:41:19,471 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash -977108255, now seen corresponding path program 1 times [2022-01-10 01:41:19,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:19,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084231211] [2022-01-10 01:41:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:19,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:20,780 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 01:41:20,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084231211] [2022-01-10 01:41:20,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084231211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:20,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:20,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-01-10 01:41:20,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434634269] [2022-01-10 01:41:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:20,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-10 01:41:20,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:20,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-10 01:41:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1304, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 01:41:20,782 INFO L87 Difference]: Start difference. First operand 4138 states and 6108 transitions. Second operand has 38 states, 38 states have (on average 2.736842105263158) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:41:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:35,001 INFO L93 Difference]: Finished difference Result 13506 states and 20009 transitions. [2022-01-10 01:41:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-10 01:41:35,002 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.736842105263158) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 01:41:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:35,018 INFO L225 Difference]: With dead ends: 13506 [2022-01-10 01:41:35,019 INFO L226 Difference]: Without dead ends: 12466 [2022-01-10 01:41:35,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=762, Invalid=4494, Unknown=0, NotChecked=0, Total=5256 [2022-01-10 01:41:35,023 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 2085 mSDsluCounter, 19878 mSDsCounter, 0 mSdLazyCounter, 13335 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 20801 SdHoareTripleChecker+Invalid, 13415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 13335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:35,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2085 Valid, 20801 Invalid, 13415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 13335 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 01:41:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12466 states. [2022-01-10 01:41:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12466 to 4167. [2022-01-10 01:41:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4167 states, 4166 states have (on average 1.4747959673547768) internal successors, (6144), 4166 states have internal predecessors, (6144), 0 states have call successors, (0), 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 01:41:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 6144 transitions. [2022-01-10 01:41:36,574 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 6144 transitions. Word has length 104 [2022-01-10 01:41:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:36,574 INFO L470 AbstractCegarLoop]: Abstraction has 4167 states and 6144 transitions. [2022-01-10 01:41:36,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.736842105263158) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 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 01:41:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 6144 transitions. [2022-01-10 01:41:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 01:41:36,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:36,576 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] [2022-01-10 01:41:36,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:41:36,576 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1621509664, now seen corresponding path program 1 times [2022-01-10 01:41:36,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:36,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919007471] [2022-01-10 01:41:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:36,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:37,132 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 01:41:37,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:37,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919007471] [2022-01-10 01:41:37,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919007471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:37,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:37,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-10 01:41:37,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319994722] [2022-01-10 01:41:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:37,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 01:41:37,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:37,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 01:41:37,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:41:37,134 INFO L87 Difference]: Start difference. First operand 4167 states and 6144 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)