/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.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:43:03,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:43:03,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:43:03,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:43:03,887 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 01:43:03,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:43:03,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:43:03,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:43:03,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:43:03,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:43:03,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:43:03,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:43:03,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:43:03,917 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:43:03,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:43:03,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:43:03,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:43:03,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:43:03,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:43:03,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:43:03,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:43:03,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:43:03,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:43:03,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:43:03,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:43:03,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:43:03,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:43:03,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:43:03,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:43:03,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:43:03,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:43:03,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:43:03,919 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:43:03,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:43:03,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:43:03,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:43:04,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:43:04,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:43:04,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:43:04,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:43:04,103 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:43:04,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:43:04,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157bd8e9d/82b94bd72bd340938fbaa2675f7be1e0/FLAG56a00a55d [2022-01-10 01:43:04,563 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:43:04,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:43:04,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157bd8e9d/82b94bd72bd340938fbaa2675f7be1e0/FLAG56a00a55d [2022-01-10 01:43:04,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157bd8e9d/82b94bd72bd340938fbaa2675f7be1e0 [2022-01-10 01:43:04,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:43:04,605 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:43:04,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:43:04,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:43:04,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:43:04,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:04" (1/1) ... [2022-01-10 01:43:04,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428fe430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:04, skipping insertion in model container [2022-01-10 01:43:04,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:04" (1/1) ... [2022-01-10 01:43:04,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:43:04,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:43:04,852 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.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[11680,11693] [2022-01-10 01:43:04,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:43:04,904 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:43:04,955 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.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[11680,11693] [2022-01-10 01:43:04,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:43:05,014 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:43:05,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05 WrapperNode [2022-01-10 01:43:05,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:43:05,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:43:05,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:43:05,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:43:05,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,068 INFO L137 Inliner]: procedures = 28, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 949 [2022-01-10 01:43:05,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:43:05,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:43:05,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:43:05,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:43:05,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:43:05,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:43:05,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:43:05,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:43:05,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (1/1) ... [2022-01-10 01:43:05,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:43:05,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:43:05,139 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 01:43:05,170 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 01:43:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:43:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:43:05,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:43:05,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:43:05,311 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:43:05,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:43:05,826 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:43:05,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:43:05,836 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:43:05,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:05 BoogieIcfgContainer [2022-01-10 01:43:05,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:43:05,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:43:05,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:43:05,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:43:05,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:43:04" (1/3) ... [2022-01-10 01:43:05,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efd6b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:05, skipping insertion in model container [2022-01-10 01:43:05,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:05" (2/3) ... [2022-01-10 01:43:05,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efd6b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:05, skipping insertion in model container [2022-01-10 01:43:05,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:05" (3/3) ... [2022-01-10 01:43:05,844 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:43:05,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:43:05,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:43:05,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:43:05,907 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 01:43:05,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:43:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 229 states have (on average 1.7685589519650655) internal successors, (405), 230 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 01:43:05,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:05,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:05,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash 96284054, now seen corresponding path program 1 times [2022-01-10 01:43:05,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:05,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064813020] [2022-01-10 01:43:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:05,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:06,494 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 01:43:06,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:06,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064813020] [2022-01-10 01:43:06,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064813020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:06,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:06,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:06,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258549346] [2022-01-10 01:43:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:06,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:06,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:06,528 INFO L87 Difference]: Start difference. First operand has 231 states, 229 states have (on average 1.7685589519650655) internal successors, (405), 230 states have internal predecessors, (405), 0 states have call successors, (0), 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 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:07,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:07,250 INFO L93 Difference]: Finished difference Result 1826 states and 2955 transitions. [2022-01-10 01:43:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:43:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-10 01:43:07,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:07,265 INFO L225 Difference]: With dead ends: 1826 [2022-01-10 01:43:07,265 INFO L226 Difference]: Without dead ends: 1705 [2022-01-10 01:43:07,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-01-10 01:43:07,270 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 3815 mSDsluCounter, 7214 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3815 SdHoareTripleChecker+Valid, 8216 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:07,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3815 Valid, 8216 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:43:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-01-10 01:43:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 348. [2022-01-10 01:43:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.446685878962536) internal successors, (502), 347 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 502 transitions. [2022-01-10 01:43:07,344 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 502 transitions. Word has length 124 [2022-01-10 01:43:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:07,344 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 502 transitions. [2022-01-10 01:43:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 502 transitions. [2022-01-10 01:43:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:07,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:07,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:07,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:43:07,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1563387348, now seen corresponding path program 1 times [2022-01-10 01:43:07,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:07,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875832316] [2022-01-10 01:43:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:07,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:07,514 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 01:43:07,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:07,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875832316] [2022-01-10 01:43:07,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875832316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:07,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:07,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:07,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345928958] [2022-01-10 01:43:07,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:07,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:07,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:07,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:07,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:07,518 INFO L87 Difference]: Start difference. First operand 348 states and 502 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:07,939 INFO L93 Difference]: Finished difference Result 1960 states and 3067 transitions. [2022-01-10 01:43:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:07,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:07,947 INFO L225 Difference]: With dead ends: 1960 [2022-01-10 01:43:07,948 INFO L226 Difference]: Without dead ends: 1780 [2022-01-10 01:43:07,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:07,950 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 2722 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 4517 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:07,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2722 Valid, 4517 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:43:07,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-01-10 01:43:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 552. [2022-01-10 01:43:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 1.5027223230490019) internal successors, (828), 551 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 828 transitions. [2022-01-10 01:43:08,007 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 828 transitions. Word has length 126 [2022-01-10 01:43:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:08,008 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 828 transitions. [2022-01-10 01:43:08,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 828 transitions. [2022-01-10 01:43:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:08,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:08,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:08,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:43:08,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash 714482392, now seen corresponding path program 1 times [2022-01-10 01:43:08,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:08,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095721063] [2022-01-10 01:43:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:08,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:08,151 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 01:43:08,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:08,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095721063] [2022-01-10 01:43:08,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095721063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:08,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:08,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:08,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210092546] [2022-01-10 01:43:08,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:08,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:08,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:08,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:08,161 INFO L87 Difference]: Start difference. First operand 552 states and 828 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:08,570 INFO L93 Difference]: Finished difference Result 2164 states and 3393 transitions. [2022-01-10 01:43:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:08,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:08,579 INFO L225 Difference]: With dead ends: 2164 [2022-01-10 01:43:08,579 INFO L226 Difference]: Without dead ends: 1984 [2022-01-10 01:43:08,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:08,585 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 2891 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:08,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2891 Valid, 3536 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:08,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-01-10 01:43:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 840. [2022-01-10 01:43:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.535160905840286) internal successors, (1288), 839 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1288 transitions. [2022-01-10 01:43:08,681 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1288 transitions. Word has length 126 [2022-01-10 01:43:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:08,682 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1288 transitions. [2022-01-10 01:43:08,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1288 transitions. [2022-01-10 01:43:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:08,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:08,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:08,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:43:08,685 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2024644258, now seen corresponding path program 1 times [2022-01-10 01:43:08,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:08,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765877206] [2022-01-10 01:43:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:08,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:08,811 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 01:43:08,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:08,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765877206] [2022-01-10 01:43:08,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765877206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:08,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:08,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:08,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547361448] [2022-01-10 01:43:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:08,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:08,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:08,814 INFO L87 Difference]: Start difference. First operand 840 states and 1288 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:09,234 INFO L93 Difference]: Finished difference Result 2358 states and 3703 transitions. [2022-01-10 01:43:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:09,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:09,241 INFO L225 Difference]: With dead ends: 2358 [2022-01-10 01:43:09,241 INFO L226 Difference]: Without dead ends: 2178 [2022-01-10 01:43:09,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:09,242 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 3489 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3489 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:09,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3489 Valid, 3070 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2022-01-10 01:43:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1034. [2022-01-10 01:43:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.546950629235237) internal successors, (1598), 1033 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1598 transitions. [2022-01-10 01:43:09,348 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1598 transitions. Word has length 126 [2022-01-10 01:43:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:09,348 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 1598 transitions. [2022-01-10 01:43:09,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1598 transitions. [2022-01-10 01:43:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:09,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:09,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:09,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:43:09,350 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash -292095440, now seen corresponding path program 1 times [2022-01-10 01:43:09,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807091577] [2022-01-10 01:43:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:09,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:09,456 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 01:43:09,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:09,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807091577] [2022-01-10 01:43:09,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807091577] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:09,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:09,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:09,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045826402] [2022-01-10 01:43:09,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:09,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:09,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:09,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:09,458 INFO L87 Difference]: Start difference. First operand 1034 states and 1598 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:09,915 INFO L93 Difference]: Finished difference Result 2547 states and 4005 transitions. [2022-01-10 01:43:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:09,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:09,922 INFO L225 Difference]: With dead ends: 2547 [2022-01-10 01:43:09,922 INFO L226 Difference]: Without dead ends: 2367 [2022-01-10 01:43:09,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:09,923 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 3816 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3816 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:09,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3816 Valid, 3169 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-01-10 01:43:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1213. [2022-01-10 01:43:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.5544554455445545) internal successors, (1884), 1212 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1884 transitions. [2022-01-10 01:43:10,062 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1884 transitions. Word has length 126 [2022-01-10 01:43:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:10,063 INFO L470 AbstractCegarLoop]: Abstraction has 1213 states and 1884 transitions. [2022-01-10 01:43:10,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1884 transitions. [2022-01-10 01:43:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:10,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:10,064 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, 1, 1, 1, 1, 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 01:43:10,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:43:10,065 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash 344464438, now seen corresponding path program 1 times [2022-01-10 01:43:10,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:10,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848676779] [2022-01-10 01:43:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:10,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:10,161 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 01:43:10,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:10,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848676779] [2022-01-10 01:43:10,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848676779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:10,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:10,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:10,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438060384] [2022-01-10 01:43:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:10,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:10,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:10,162 INFO L87 Difference]: Start difference. First operand 1213 states and 1884 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:10,638 INFO L93 Difference]: Finished difference Result 2725 states and 4290 transitions. [2022-01-10 01:43:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:10,639 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:10,646 INFO L225 Difference]: With dead ends: 2725 [2022-01-10 01:43:10,646 INFO L226 Difference]: Without dead ends: 2545 [2022-01-10 01:43:10,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:10,648 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 3955 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3955 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:10,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3955 Valid, 3145 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2022-01-10 01:43:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1391. [2022-01-10 01:43:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 1.5604316546762589) internal successors, (2169), 1390 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2169 transitions. [2022-01-10 01:43:10,833 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2169 transitions. Word has length 126 [2022-01-10 01:43:10,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:10,833 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 2169 transitions. [2022-01-10 01:43:10,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2169 transitions. [2022-01-10 01:43:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:10,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:10,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:10,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:43:10,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:10,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1799008799, now seen corresponding path program 1 times [2022-01-10 01:43:10,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:10,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642003] [2022-01-10 01:43:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:10,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:11,110 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 01:43:11,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:11,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642003] [2022-01-10 01:43:11,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:11,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:11,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:11,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390621881] [2022-01-10 01:43:11,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:11,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:11,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:11,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:11,112 INFO L87 Difference]: Start difference. First operand 1391 states and 2169 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:11,594 INFO L93 Difference]: Finished difference Result 2552 states and 4024 transitions. [2022-01-10 01:43:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:11,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:11,598 INFO L225 Difference]: With dead ends: 2552 [2022-01-10 01:43:11,598 INFO L226 Difference]: Without dead ends: 1393 [2022-01-10 01:43:11,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:43:11,603 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 1911 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:11,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 1600 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2022-01-10 01:43:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1391. [2022-01-10 01:43:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 1.5553956834532374) internal successors, (2162), 1390 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2162 transitions. [2022-01-10 01:43:11,759 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2162 transitions. Word has length 126 [2022-01-10 01:43:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:11,759 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 2162 transitions. [2022-01-10 01:43:11,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2162 transitions. [2022-01-10 01:43:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:11,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:11,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:11,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:43:11,761 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:11,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2079312318, now seen corresponding path program 1 times [2022-01-10 01:43:11,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:11,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677138776] [2022-01-10 01:43:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:11,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:11,813 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 01:43:11,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:11,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677138776] [2022-01-10 01:43:11,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677138776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:11,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:11,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:11,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137459013] [2022-01-10 01:43:11,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:11,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:11,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:11,814 INFO L87 Difference]: Start difference. First operand 1391 states and 2162 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:12,162 INFO L93 Difference]: Finished difference Result 3625 states and 5715 transitions. [2022-01-10 01:43:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:12,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:12,169 INFO L225 Difference]: With dead ends: 3625 [2022-01-10 01:43:12,169 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 01:43:12,171 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 01:43:12,171 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 131 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 733 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 01:43:12,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 733 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 01:43:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2438. [2022-01-10 01:43:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2437 states have (on average 1.5601148953631514) internal successors, (3802), 2437 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3802 transitions. [2022-01-10 01:43:12,530 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3802 transitions. Word has length 126 [2022-01-10 01:43:12,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:12,532 INFO L470 AbstractCegarLoop]: Abstraction has 2438 states and 3802 transitions. [2022-01-10 01:43:12,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:12,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3802 transitions. [2022-01-10 01:43:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:12,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:12,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:12,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:43:12,533 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash 75972018, now seen corresponding path program 1 times [2022-01-10 01:43:12,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:12,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938620050] [2022-01-10 01:43:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:12,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:12,622 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 01:43:12,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:12,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938620050] [2022-01-10 01:43:12,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938620050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:12,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:12,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:12,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151197185] [2022-01-10 01:43:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:12,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:12,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:12,624 INFO L87 Difference]: Start difference. First operand 2438 states and 3802 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:13,473 INFO L93 Difference]: Finished difference Result 5239 states and 8225 transitions. [2022-01-10 01:43:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:13,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:13,488 INFO L225 Difference]: With dead ends: 5239 [2022-01-10 01:43:13,489 INFO L226 Difference]: Without dead ends: 4898 [2022-01-10 01:43:13,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:13,491 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 2948 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 3658 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:13,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2948 Valid, 3658 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2022-01-10 01:43:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2783. [2022-01-10 01:43:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2782 states have (on average 1.5625449317038103) internal successors, (4347), 2782 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4347 transitions. [2022-01-10 01:43:13,898 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4347 transitions. Word has length 126 [2022-01-10 01:43:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:13,898 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 4347 transitions. [2022-01-10 01:43:13,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4347 transitions. [2022-01-10 01:43:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:13,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:13,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:13,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:43:13,900 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:13,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1961504132, now seen corresponding path program 1 times [2022-01-10 01:43:13,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:13,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791142015] [2022-01-10 01:43:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:13,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:14,013 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 01:43:14,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:14,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791142015] [2022-01-10 01:43:14,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791142015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:14,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:14,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:14,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581759422] [2022-01-10 01:43:14,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:14,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:14,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:14,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:14,015 INFO L87 Difference]: Start difference. First operand 2783 states and 4347 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:14,985 INFO L93 Difference]: Finished difference Result 5584 states and 8770 transitions. [2022-01-10 01:43:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:14,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:15,004 INFO L225 Difference]: With dead ends: 5584 [2022-01-10 01:43:15,004 INFO L226 Difference]: Without dead ends: 5243 [2022-01-10 01:43:15,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:15,007 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 3055 mSDsluCounter, 3720 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:15,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3055 Valid, 4299 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2022-01-10 01:43:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 3133. [2022-01-10 01:43:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 3132 states have (on average 1.5644955300127714) internal successors, (4900), 3132 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4900 transitions. [2022-01-10 01:43:15,476 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4900 transitions. Word has length 126 [2022-01-10 01:43:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:15,476 INFO L470 AbstractCegarLoop]: Abstraction has 3133 states and 4900 transitions. [2022-01-10 01:43:15,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4900 transitions. [2022-01-10 01:43:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 01:43:15,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:15,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:15,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:43:15,478 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 804381450, now seen corresponding path program 1 times [2022-01-10 01:43:15,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:15,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544740098] [2022-01-10 01:43:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:15,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:15,557 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 01:43:15,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:15,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544740098] [2022-01-10 01:43:15,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544740098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:15,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:15,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:43:15,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377224750] [2022-01-10 01:43:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:15,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:43:15,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:43:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:43:15,559 INFO L87 Difference]: Start difference. First operand 3133 states and 4900 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:16,695 INFO L93 Difference]: Finished difference Result 5944 states and 9339 transitions. [2022-01-10 01:43:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:16,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 01:43:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:16,704 INFO L225 Difference]: With dead ends: 5944 [2022-01-10 01:43:16,704 INFO L226 Difference]: Without dead ends: 5603 [2022-01-10 01:43:16,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:16,706 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 3392 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3392 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:16,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3392 Valid, 4616 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2022-01-10 01:43:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 3498. [2022-01-10 01:43:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 1.5661995996568487) internal successors, (5477), 3497 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 5477 transitions. [2022-01-10 01:43:17,248 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 5477 transitions. Word has length 126 [2022-01-10 01:43:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:17,248 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 5477 transitions. [2022-01-10 01:43:17,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 5477 transitions. [2022-01-10 01:43:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 01:43:17,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:17,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:17,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:43:17,250 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash 63392965, now seen corresponding path program 1 times [2022-01-10 01:43:17,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:17,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287382139] [2022-01-10 01:43:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:17,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:17,296 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 01:43:17,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287382139] [2022-01-10 01:43:17,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287382139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:17,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:17,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:17,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339978087] [2022-01-10 01:43:17,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:17,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:17,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:17,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:17,298 INFO L87 Difference]: Start difference. First operand 3498 states and 5477 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:18,556 INFO L93 Difference]: Finished difference Result 10285 states and 16189 transitions. [2022-01-10 01:43:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:18,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 01:43:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:18,566 INFO L225 Difference]: With dead ends: 10285 [2022-01-10 01:43:18,566 INFO L226 Difference]: Without dead ends: 6854 [2022-01-10 01:43:18,569 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 01:43:18,570 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1230 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:18,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 274 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:43:18,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2022-01-10 01:43:19,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6852. [2022-01-10 01:43:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5676543570281711) internal successors, (10740), 6851 states have internal predecessors, (10740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10740 transitions. [2022-01-10 01:43:19,645 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10740 transitions. Word has length 127 [2022-01-10 01:43:19,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:19,645 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10740 transitions. [2022-01-10 01:43:19,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:19,646 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10740 transitions. [2022-01-10 01:43:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 01:43:19,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:19,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:19,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:43:19,649 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash -715246153, now seen corresponding path program 1 times [2022-01-10 01:43:19,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:19,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656183183] [2022-01-10 01:43:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:19,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:19,717 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 01:43:19,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:19,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656183183] [2022-01-10 01:43:19,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656183183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:19,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:19,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:19,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147564700] [2022-01-10 01:43:19,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:19,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:19,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:19,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:19,719 INFO L87 Difference]: Start difference. First operand 6852 states and 10740 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:21,007 INFO L93 Difference]: Finished difference Result 13621 states and 21393 transitions. [2022-01-10 01:43:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:21,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 01:43:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:21,019 INFO L225 Difference]: With dead ends: 13621 [2022-01-10 01:43:21,019 INFO L226 Difference]: Without dead ends: 6852 [2022-01-10 01:43:21,026 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 01:43:21,027 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 800 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:21,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 205 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2022-01-10 01:43:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2022-01-10 01:43:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5564151218800175) internal successors, (10663), 6851 states have internal predecessors, (10663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10663 transitions. [2022-01-10 01:43:22,162 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10663 transitions. Word has length 128 [2022-01-10 01:43:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:22,163 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10663 transitions. [2022-01-10 01:43:22,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10663 transitions. [2022-01-10 01:43:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 01:43:22,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:22,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:22,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:43:22,165 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1535233275, now seen corresponding path program 1 times [2022-01-10 01:43:22,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:22,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163744360] [2022-01-10 01:43:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:22,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:22,213 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 01:43:22,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163744360] [2022-01-10 01:43:22,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163744360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:22,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:22,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:22,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694588123] [2022-01-10 01:43:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:22,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:22,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:22,215 INFO L87 Difference]: Start difference. First operand 6852 states and 10663 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:23,520 INFO L93 Difference]: Finished difference Result 13609 states and 21225 transitions. [2022-01-10 01:43:23,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:23,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 01:43:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:23,529 INFO L225 Difference]: With dead ends: 13609 [2022-01-10 01:43:23,530 INFO L226 Difference]: Without dead ends: 6852 [2022-01-10 01:43:23,537 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 01:43:23,537 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 763 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:23,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 233 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2022-01-10 01:43:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2022-01-10 01:43:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.545175886731864) internal successors, (10586), 6851 states have internal predecessors, (10586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10586 transitions. [2022-01-10 01:43:24,692 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10586 transitions. Word has length 129 [2022-01-10 01:43:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:24,692 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10586 transitions. [2022-01-10 01:43:24,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10586 transitions. [2022-01-10 01:43:24,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 01:43:24,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:24,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:24,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:43:24,694 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:24,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash -746894101, now seen corresponding path program 1 times [2022-01-10 01:43:24,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:24,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694959114] [2022-01-10 01:43:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:24,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:24,741 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 01:43:24,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:24,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694959114] [2022-01-10 01:43:24,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694959114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:24,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:24,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:24,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123601628] [2022-01-10 01:43:24,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:24,742 INFO L87 Difference]: Start difference. First operand 6852 states and 10586 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:26,003 INFO L93 Difference]: Finished difference Result 13613 states and 21076 transitions. [2022-01-10 01:43:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:26,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-01-10 01:43:26,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:26,012 INFO L225 Difference]: With dead ends: 13613 [2022-01-10 01:43:26,012 INFO L226 Difference]: Without dead ends: 6852 [2022-01-10 01:43:26,019 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 01:43:26,020 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 765 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:26,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 221 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2022-01-10 01:43:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2022-01-10 01:43:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5339366515837105) internal successors, (10509), 6851 states have internal predecessors, (10509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10509 transitions. [2022-01-10 01:43:27,305 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10509 transitions. Word has length 130 [2022-01-10 01:43:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:27,306 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10509 transitions. [2022-01-10 01:43:27,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10509 transitions. [2022-01-10 01:43:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 01:43:27,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:27,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:27,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:43:27,307 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -894772551, now seen corresponding path program 1 times [2022-01-10 01:43:27,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:27,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601048008] [2022-01-10 01:43:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:27,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:27,356 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 01:43:27,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:27,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601048008] [2022-01-10 01:43:27,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601048008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:27,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:27,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:27,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119951555] [2022-01-10 01:43:27,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:27,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:27,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:27,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:27,359 INFO L87 Difference]: Start difference. First operand 6852 states and 10509 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:28,660 INFO L93 Difference]: Finished difference Result 13625 states and 20936 transitions. [2022-01-10 01:43:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 01:43:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:28,669 INFO L225 Difference]: With dead ends: 13625 [2022-01-10 01:43:28,669 INFO L226 Difference]: Without dead ends: 6852 [2022-01-10 01:43:28,675 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 01:43:28,675 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 793 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:28,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 197 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:28,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2022-01-10 01:43:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2022-01-10 01:43:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.522697416435557) internal successors, (10432), 6851 states have internal predecessors, (10432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10432 transitions. [2022-01-10 01:43:29,850 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10432 transitions. Word has length 131 [2022-01-10 01:43:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:29,851 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10432 transitions. [2022-01-10 01:43:29,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10432 transitions. [2022-01-10 01:43:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 01:43:29,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:29,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:29,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:43:29,854 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash 707180727, now seen corresponding path program 1 times [2022-01-10 01:43:29,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:29,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969096246] [2022-01-10 01:43:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:29,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:29,903 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 01:43:29,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:29,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969096246] [2022-01-10 01:43:29,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969096246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:29,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:29,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:29,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741283826] [2022-01-10 01:43:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:29,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:29,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:29,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:29,905 INFO L87 Difference]: Start difference. First operand 6852 states and 10432 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:31,232 INFO L93 Difference]: Finished difference Result 13633 states and 20792 transitions. [2022-01-10 01:43:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:31,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-10 01:43:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:31,240 INFO L225 Difference]: With dead ends: 13633 [2022-01-10 01:43:31,240 INFO L226 Difference]: Without dead ends: 6852 [2022-01-10 01:43:31,244 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 01:43:31,245 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 809 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:31,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 181 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2022-01-10 01:43:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2022-01-10 01:43:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5114581812874033) internal successors, (10355), 6851 states have internal predecessors, (10355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10355 transitions. [2022-01-10 01:43:32,486 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10355 transitions. Word has length 132 [2022-01-10 01:43:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:32,487 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10355 transitions. [2022-01-10 01:43:32,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10355 transitions. [2022-01-10 01:43:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 01:43:32,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:32,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:32,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:43:32,488 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:32,489 INFO L85 PathProgramCache]: Analyzing trace with hash -72647047, now seen corresponding path program 1 times [2022-01-10 01:43:32,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:32,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135228125] [2022-01-10 01:43:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:32,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:32,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:32,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135228125] [2022-01-10 01:43:32,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135228125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:32,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:32,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:32,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583045550] [2022-01-10 01:43:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:32,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:32,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:32,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:32,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:32,535 INFO L87 Difference]: Start difference. First operand 6852 states and 10355 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:33,886 INFO L93 Difference]: Finished difference Result 13629 states and 20634 transitions. [2022-01-10 01:43:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-10 01:43:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:33,895 INFO L225 Difference]: With dead ends: 13629 [2022-01-10 01:43:33,895 INFO L226 Difference]: Without dead ends: 6852 [2022-01-10 01:43:33,900 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 01:43:33,901 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 791 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:33,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 189 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2022-01-10 01:43:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2022-01-10 01:43:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5002189461392497) internal successors, (10278), 6851 states have internal predecessors, (10278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10278 transitions. [2022-01-10 01:43:35,141 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10278 transitions. Word has length 133 [2022-01-10 01:43:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:35,141 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10278 transitions. [2022-01-10 01:43:35,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10278 transitions. [2022-01-10 01:43:35,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 01:43:35,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:35,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:35,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:43:35,143 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1467277949, now seen corresponding path program 1 times [2022-01-10 01:43:35,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:35,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289269360] [2022-01-10 01:43:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:35,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:35,212 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 01:43:35,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:35,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289269360] [2022-01-10 01:43:35,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289269360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:35,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:35,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:35,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724766673] [2022-01-10 01:43:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:35,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:35,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:35,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:35,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:35,214 INFO L87 Difference]: Start difference. First operand 6852 states and 10278 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:36,659 INFO L93 Difference]: Finished difference Result 13617 states and 20468 transitions. [2022-01-10 01:43:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:43:36,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-01-10 01:43:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:36,668 INFO L225 Difference]: With dead ends: 13617 [2022-01-10 01:43:36,668 INFO L226 Difference]: Without dead ends: 6852 [2022-01-10 01:43:36,672 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 01:43:36,673 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 749 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:36,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 213 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2022-01-10 01:43:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2022-01-10 01:43:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.4889797109910963) internal successors, (10201), 6851 states have internal predecessors, (10201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10201 transitions. [2022-01-10 01:43:37,941 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10201 transitions. Word has length 134 [2022-01-10 01:43:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:37,941 INFO L470 AbstractCegarLoop]: Abstraction has 6852 states and 10201 transitions. [2022-01-10 01:43:37,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10201 transitions. [2022-01-10 01:43:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 01:43:37,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:37,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:37,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:43:37,943 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1720431211, now seen corresponding path program 1 times [2022-01-10 01:43:37,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:37,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913308006] [2022-01-10 01:43:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:37,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:38,024 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 01:43:38,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:38,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913308006] [2022-01-10 01:43:38,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913308006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:38,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:38,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:43:38,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149344432] [2022-01-10 01:43:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:38,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:38,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:38,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:38,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:38,025 INFO L87 Difference]: Start difference. First operand 6852 states and 10201 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:40,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:40,188 INFO L93 Difference]: Finished difference Result 11524 states and 17145 transitions. [2022-01-10 01:43:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:43:40,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-10 01:43:40,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:40,200 INFO L225 Difference]: With dead ends: 11524 [2022-01-10 01:43:40,200 INFO L226 Difference]: Without dead ends: 11522 [2022-01-10 01:43:40,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:43:40,202 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 260 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:40,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 1219 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11522 states. [2022-01-10 01:43:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11522 to 6888. [2022-01-10 01:43:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6887 states have (on average 1.483519674749528) internal successors, (10217), 6887 states have internal predecessors, (10217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 10217 transitions. [2022-01-10 01:43:41,594 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 10217 transitions. Word has length 135 [2022-01-10 01:43:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:41,594 INFO L470 AbstractCegarLoop]: Abstraction has 6888 states and 10217 transitions. [2022-01-10 01:43:41,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 10217 transitions. [2022-01-10 01:43:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 01:43:41,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:41,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:41,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:43:41,596 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1548122415, now seen corresponding path program 1 times [2022-01-10 01:43:41,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:41,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294571917] [2022-01-10 01:43:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:41,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:41,726 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 01:43:41,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:41,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294571917] [2022-01-10 01:43:41,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294571917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:41,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:41,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:43:41,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406075482] [2022-01-10 01:43:41,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:41,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:43:41,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:41,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:43:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:43:41,728 INFO L87 Difference]: Start difference. First operand 6888 states and 10217 transitions. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:44,990 INFO L93 Difference]: Finished difference Result 19981 states and 29695 transitions. [2022-01-10 01:43:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:43:44,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-10 01:43:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:45,005 INFO L225 Difference]: With dead ends: 19981 [2022-01-10 01:43:45,006 INFO L226 Difference]: Without dead ends: 13368 [2022-01-10 01:43:45,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:43:45,013 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 2151 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:45,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2151 Valid, 536 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:43:45,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13368 states. [2022-01-10 01:43:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13368 to 6888. [2022-01-10 01:43:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6887 states have (on average 1.4833744736459997) internal successors, (10216), 6887 states have internal predecessors, (10216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 10216 transitions. [2022-01-10 01:43:46,608 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 10216 transitions. Word has length 135 [2022-01-10 01:43:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:46,609 INFO L470 AbstractCegarLoop]: Abstraction has 6888 states and 10216 transitions. [2022-01-10 01:43:46,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 10216 transitions. [2022-01-10 01:43:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 01:43:46,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:46,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:46,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:43:46,610 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash 69876005, now seen corresponding path program 1 times [2022-01-10 01:43:46,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:46,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535676452] [2022-01-10 01:43:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:46,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:46,810 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 01:43:46,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:46,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535676452] [2022-01-10 01:43:46,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535676452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:46,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:46,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 01:43:46,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295637945] [2022-01-10 01:43:46,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:46,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:43:46,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:46,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:43:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:43:46,812 INFO L87 Difference]: Start difference. First operand 6888 states and 10216 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:54,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:54,372 INFO L93 Difference]: Finished difference Result 34286 states and 50624 transitions. [2022-01-10 01:43:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 01:43:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-01-10 01:43:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:54,407 INFO L225 Difference]: With dead ends: 34286 [2022-01-10 01:43:54,407 INFO L226 Difference]: Without dead ends: 27663 [2022-01-10 01:43:54,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-01-10 01:43:54,417 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 3309 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:54,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3309 Valid, 1082 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:43:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27663 states. [2022-01-10 01:43:56,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27663 to 6921. [2022-01-10 01:43:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6921 states, 6920 states have (on average 1.4823699421965317) internal successors, (10258), 6920 states have internal predecessors, (10258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6921 states to 6921 states and 10258 transitions. [2022-01-10 01:43:56,310 INFO L78 Accepts]: Start accepts. Automaton has 6921 states and 10258 transitions. Word has length 136 [2022-01-10 01:43:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:56,310 INFO L470 AbstractCegarLoop]: Abstraction has 6921 states and 10258 transitions. [2022-01-10 01:43:56,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6921 states and 10258 transitions. [2022-01-10 01:43:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 01:43:56,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:56,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:56,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:43:56,312 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1294997924, now seen corresponding path program 1 times [2022-01-10 01:43:56,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:56,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630462754] [2022-01-10 01:43:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:56,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:56,508 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 01:43:56,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630462754] [2022-01-10 01:43:56,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630462754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:56,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:56,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 01:43:56,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13050992] [2022-01-10 01:43:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:56,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:43:56,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:43:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:43:56,509 INFO L87 Difference]: Start difference. First operand 6921 states and 10258 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:04,920 INFO L93 Difference]: Finished difference Result 34199 states and 50474 transitions. [2022-01-10 01:44:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 01:44:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-01-10 01:44:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:04,960 INFO L225 Difference]: With dead ends: 34199 [2022-01-10 01:44:04,960 INFO L226 Difference]: Without dead ends: 27606 [2022-01-10 01:44:04,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-01-10 01:44:04,970 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2320 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:04,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2320 Valid, 1319 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:44:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27606 states. [2022-01-10 01:44:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27606 to 6960. [2022-01-10 01:44:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6960 states, 6959 states have (on average 1.481391004454663) internal successors, (10309), 6959 states have internal predecessors, (10309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 10309 transitions. [2022-01-10 01:44:07,078 INFO L78 Accepts]: Start accepts. Automaton has 6960 states and 10309 transitions. Word has length 136 [2022-01-10 01:44:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:07,079 INFO L470 AbstractCegarLoop]: Abstraction has 6960 states and 10309 transitions. [2022-01-10 01:44:07,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6960 states and 10309 transitions. [2022-01-10 01:44:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 01:44:07,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:07,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:07,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:44:07,080 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -170943664, now seen corresponding path program 1 times [2022-01-10 01:44:07,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:07,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858114394] [2022-01-10 01:44:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:07,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:07,197 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 01:44:07,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:07,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858114394] [2022-01-10 01:44:07,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858114394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:07,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:07,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:44:07,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677852399] [2022-01-10 01:44:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:07,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:44:07,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:44:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:44:07,199 INFO L87 Difference]: Start difference. First operand 6960 states and 10309 transitions. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 9 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:11,626 INFO L93 Difference]: Finished difference Result 20167 states and 29865 transitions. [2022-01-10 01:44:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:44:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 9 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-01-10 01:44:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:11,643 INFO L225 Difference]: With dead ends: 20167 [2022-01-10 01:44:11,644 INFO L226 Difference]: Without dead ends: 13672 [2022-01-10 01:44:11,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:44:11,650 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 2038 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:11,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 617 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:44:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states.