/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/eca-rers2012/Problem17_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:24:26,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:24:26,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:24:26,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:24:26,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:24:26,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:24:26,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:24:26,881 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 00:24:26,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:24:26,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:24:26,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:24:26,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:24:26,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:24:26,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:24:26,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:24:26,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:24:26,904 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:24:26,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:24:26,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:24:26,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:24:26,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:24:26,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:24:26,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:24:26,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:24:27,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:24:27,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:24:27,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:24:27,100 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:24:27,100 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:24:27,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label23.c [2022-01-10 00:24:27,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e373242/faac8d538f4c403496f201c5ea26a13a/FLAG292a4e1af [2022-01-10 00:24:27,599 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:24:27,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label23.c [2022-01-10 00:24:27,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e373242/faac8d538f4c403496f201c5ea26a13a/FLAG292a4e1af [2022-01-10 00:24:27,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e373242/faac8d538f4c403496f201c5ea26a13a [2022-01-10 00:24:27,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:24:27,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:24:27,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:24:27,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:24:27,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:24:27,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:27" (1/1) ... [2022-01-10 00:24:27,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b64d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:27, skipping insertion in model container [2022-01-10 00:24:27,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:27" (1/1) ... [2022-01-10 00:24:27,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:24:28,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:24:28,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label23.c[3293,3306] [2022-01-10 00:24:28,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:24:28,623 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:24:28,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label23.c[3293,3306] [2022-01-10 00:24:28,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:24:28,889 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:24:28,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28 WrapperNode [2022-01-10 00:24:28,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:24:28,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:24:28,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:24:28,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:24:28,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:28,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,162 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:24:29,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:24:29,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:24:29,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:24:29,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:24:29,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:24:29,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:24:29,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:24:29,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:24:29,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (1/1) ... [2022-01-10 00:24:29,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:24:29,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:29,451 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 00:24:29,470 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 00:24:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:24:29,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:24:29,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:24:29,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:24:29,527 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:24:29,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:24:31,805 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:24:31,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:24:31,818 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:24:31,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:31 BoogieIcfgContainer [2022-01-10 00:24:31,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:24:31,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:24:31,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:24:31,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:24:31,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:24:27" (1/3) ... [2022-01-10 00:24:31,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125a30e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:31, skipping insertion in model container [2022-01-10 00:24:31,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:28" (2/3) ... [2022-01-10 00:24:31,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125a30e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:31, skipping insertion in model container [2022-01-10 00:24:31,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:31" (3/3) ... [2022-01-10 00:24:31,826 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label23.c [2022-01-10 00:24:31,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:24:31,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:24:31,869 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:24:31,874 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 00:24:31,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:24:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 00:24:31,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:31,902 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] [2022-01-10 00:24:31,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:31,905 INFO L85 PathProgramCache]: Analyzing trace with hash -85512855, now seen corresponding path program 1 times [2022-01-10 00:24:31,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:31,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520341287] [2022-01-10 00:24:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:31,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:32,081 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 00:24:32,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:32,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520341287] [2022-01-10 00:24:32,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520341287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:32,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:32,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:32,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45338576] [2022-01-10 00:24:32,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:32,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:32,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:32,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:32,110 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:34,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:34,582 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-01-10 00:24:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:34,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-01-10 00:24:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:34,618 INFO L225 Difference]: With dead ends: 1642 [2022-01-10 00:24:34,618 INFO L226 Difference]: Without dead ends: 975 [2022-01-10 00:24:34,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:24:34,629 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 469 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:34,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:24:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-10 00:24:34,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-01-10 00:24:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-01-10 00:24:34,698 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 21 [2022-01-10 00:24:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:34,698 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-01-10 00:24:34,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-01-10 00:24:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 00:24:34,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:34,701 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:34,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:24:34,701 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash 637490300, now seen corresponding path program 1 times [2022-01-10 00:24:34,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:34,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902331622] [2022-01-10 00:24:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:34,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:34,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:34,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902331622] [2022-01-10 00:24:34,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902331622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:34,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:34,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:34,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480245512] [2022-01-10 00:24:34,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:34,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:34,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:34,829 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:36,768 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-01-10 00:24:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:36,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-01-10 00:24:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:36,774 INFO L225 Difference]: With dead ends: 2814 [2022-01-10 00:24:36,774 INFO L226 Difference]: Without dead ends: 1844 [2022-01-10 00:24:36,775 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 00:24:36,776 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 470 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:36,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:24:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-10 00:24:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-01-10 00:24:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-01-10 00:24:36,830 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 91 [2022-01-10 00:24:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-01-10 00:24:36,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-01-10 00:24:36,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 00:24:36,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:36,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:36,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:24:36,839 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:36,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:36,839 INFO L85 PathProgramCache]: Analyzing trace with hash 873597241, now seen corresponding path program 1 times [2022-01-10 00:24:36,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:36,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173447042] [2022-01-10 00:24:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:36,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:36,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173447042] [2022-01-10 00:24:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173447042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:36,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:36,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:36,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966444698] [2022-01-10 00:24:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:36,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:36,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:36,954 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:38,663 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-01-10 00:24:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:38,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 00:24:38,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:38,670 INFO L225 Difference]: With dead ends: 5395 [2022-01-10 00:24:38,670 INFO L226 Difference]: Without dead ends: 2701 [2022-01-10 00:24:38,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:24:38,673 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:38,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:24:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-01-10 00:24:38,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-01-10 00:24:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-01-10 00:24:38,707 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 113 [2022-01-10 00:24:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:38,708 INFO L470 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-01-10 00:24:38,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-01-10 00:24:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 00:24:38,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:38,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:38,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:24:38,716 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:38,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:38,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1388407930, now seen corresponding path program 1 times [2022-01-10 00:24:38,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:38,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125500333] [2022-01-10 00:24:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:38,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:38,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:38,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125500333] [2022-01-10 00:24:38,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125500333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:38,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:38,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:38,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090198195] [2022-01-10 00:24:38,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:38,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:38,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:38,848 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:40,238 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-01-10 00:24:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:40,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-01-10 00:24:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:40,249 INFO L225 Difference]: With dead ends: 7108 [2022-01-10 00:24:40,250 INFO L226 Difference]: Without dead ends: 4409 [2022-01-10 00:24:40,252 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 00:24:40,253 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:40,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:24:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-01-10 00:24:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-01-10 00:24:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-01-10 00:24:40,306 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 173 [2022-01-10 00:24:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:40,306 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-01-10 00:24:40,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-01-10 00:24:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 00:24:40,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:40,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:40,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:24:40,308 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1455471595, now seen corresponding path program 1 times [2022-01-10 00:24:40,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:40,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464952558] [2022-01-10 00:24:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:40,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:24:40,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464952558] [2022-01-10 00:24:40,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464952558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:40,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:40,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:40,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544771928] [2022-01-10 00:24:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:40,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:40,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:40,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:40,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:40,380 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:42,029 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-01-10 00:24:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 175 [2022-01-10 00:24:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:42,046 INFO L225 Difference]: With dead ends: 10936 [2022-01-10 00:24:42,046 INFO L226 Difference]: Without dead ends: 6528 [2022-01-10 00:24:42,050 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 00:24:42,052 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 430 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:42,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:24:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-01-10 00:24:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-01-10 00:24:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-01-10 00:24:42,120 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 175 [2022-01-10 00:24:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:42,121 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-01-10 00:24:42,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-01-10 00:24:42,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-01-10 00:24:42,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:42,123 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:42,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:24:42,123 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1465351909, now seen corresponding path program 1 times [2022-01-10 00:24:42,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:42,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142359464] [2022-01-10 00:24:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:42,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:24:42,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:42,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142359464] [2022-01-10 00:24:42,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142359464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:42,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:42,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:42,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775714145] [2022-01-10 00:24:42,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:42,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:42,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:42,240 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:43,833 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2022-01-10 00:24:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:43,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-01-10 00:24:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:43,846 INFO L225 Difference]: With dead ends: 10045 [2022-01-10 00:24:43,846 INFO L226 Difference]: Without dead ends: 5665 [2022-01-10 00:24:43,850 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 00:24:43,851 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 415 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:43,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:24:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2022-01-10 00:24:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2022-01-10 00:24:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2022-01-10 00:24:43,902 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 241 [2022-01-10 00:24:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:43,902 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2022-01-10 00:24:43,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2022-01-10 00:24:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-10 00:24:43,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:43,904 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:43,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:24:43,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1091256905, now seen corresponding path program 1 times [2022-01-10 00:24:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160052673] [2022-01-10 00:24:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:43,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-10 00:24:43,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:43,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160052673] [2022-01-10 00:24:43,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160052673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:43,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:43,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:43,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229642000] [2022-01-10 00:24:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:43,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:43,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:43,999 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:45,481 INFO L93 Difference]: Finished difference Result 12593 states and 14783 transitions. [2022-01-10 00:24:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 253 [2022-01-10 00:24:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:45,508 INFO L225 Difference]: With dead ends: 12593 [2022-01-10 00:24:45,508 INFO L226 Difference]: Without dead ends: 6936 [2022-01-10 00:24:45,512 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 00:24:45,515 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:45,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:24:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2022-01-10 00:24:45,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6936. [2022-01-10 00:24:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6935 states have (on average 1.1322278298485942) internal successors, (7852), 6935 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 7852 transitions. [2022-01-10 00:24:45,599 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 7852 transitions. Word has length 253 [2022-01-10 00:24:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:45,600 INFO L470 AbstractCegarLoop]: Abstraction has 6936 states and 7852 transitions. [2022-01-10 00:24:45,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 7852 transitions. [2022-01-10 00:24:45,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-01-10 00:24:45,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:45,603 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:45,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:24:45,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1232583844, now seen corresponding path program 1 times [2022-01-10 00:24:45,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:45,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468196232] [2022-01-10 00:24:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:45,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-01-10 00:24:45,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:45,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468196232] [2022-01-10 00:24:45,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468196232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:45,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:45,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:45,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596318447] [2022-01-10 00:24:45,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:45,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:45,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:45,721 INFO L87 Difference]: Start difference. First operand 6936 states and 7852 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 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 00:24:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:47,180 INFO L93 Difference]: Finished difference Result 16424 states and 18762 transitions. [2022-01-10 00:24:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 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 293 [2022-01-10 00:24:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:47,194 INFO L225 Difference]: With dead ends: 16424 [2022-01-10 00:24:47,194 INFO L226 Difference]: Without dead ends: 9490 [2022-01-10 00:24:47,201 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 00:24:47,202 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 484 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:47,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 330 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:24:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9490 states. [2022-01-10 00:24:47,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9490 to 8636. [2022-01-10 00:24:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 8635 states have (on average 1.1345686160972785) internal successors, (9797), 8635 states have internal predecessors, (9797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 9797 transitions. [2022-01-10 00:24:47,293 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 9797 transitions. Word has length 293 [2022-01-10 00:24:47,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:47,294 INFO L470 AbstractCegarLoop]: Abstraction has 8636 states and 9797 transitions. [2022-01-10 00:24:47,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 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 00:24:47,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 9797 transitions. [2022-01-10 00:24:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-10 00:24:47,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:47,298 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:47,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:24:47,299 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1429827616, now seen corresponding path program 1 times [2022-01-10 00:24:47,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:47,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609401394] [2022-01-10 00:24:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:47,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:24:47,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:47,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609401394] [2022-01-10 00:24:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609401394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:47,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:47,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:47,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450305147] [2022-01-10 00:24:47,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:47,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:47,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:47,420 INFO L87 Difference]: Start difference. First operand 8636 states and 9797 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:49,178 INFO L93 Difference]: Finished difference Result 23689 states and 26990 transitions. [2022-01-10 00:24:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 310 [2022-01-10 00:24:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:49,225 INFO L225 Difference]: With dead ends: 23689 [2022-01-10 00:24:49,226 INFO L226 Difference]: Without dead ends: 15055 [2022-01-10 00:24:49,248 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 00:24:49,252 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 480 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:49,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 807 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:24:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15055 states. [2022-01-10 00:24:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15055 to 14182. [2022-01-10 00:24:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14182 states, 14181 states have (on average 1.130315210492913) internal successors, (16029), 14181 states have internal predecessors, (16029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14182 states to 14182 states and 16029 transitions. [2022-01-10 00:24:49,484 INFO L78 Accepts]: Start accepts. Automaton has 14182 states and 16029 transitions. Word has length 310 [2022-01-10 00:24:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:49,485 INFO L470 AbstractCegarLoop]: Abstraction has 14182 states and 16029 transitions. [2022-01-10 00:24:49,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 14182 states and 16029 transitions. [2022-01-10 00:24:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-01-10 00:24:49,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:49,490 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:49,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:24:49,490 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1182313876, now seen corresponding path program 1 times [2022-01-10 00:24:49,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:49,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835367805] [2022-01-10 00:24:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:49,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:49,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:49,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835367805] [2022-01-10 00:24:49,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835367805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:49,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:49,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:49,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545692604] [2022-01-10 00:24:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:49,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:24:49,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:24:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:24:49,614 INFO L87 Difference]: Start difference. First operand 14182 states and 16029 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:51,771 INFO L93 Difference]: Finished difference Result 34771 states and 39275 transitions. [2022-01-10 00:24:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:24:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 360 [2022-01-10 00:24:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:51,843 INFO L225 Difference]: With dead ends: 34771 [2022-01-10 00:24:51,844 INFO L226 Difference]: Without dead ends: 20166 [2022-01-10 00:24:51,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:24:51,895 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 650 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2475 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:51,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 244 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2475 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:24:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20166 states. [2022-01-10 00:24:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20166 to 20164. [2022-01-10 00:24:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20164 states, 20163 states have (on average 1.1312304716560035) internal successors, (22809), 20163 states have internal predecessors, (22809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20164 states to 20164 states and 22809 transitions. [2022-01-10 00:24:52,333 INFO L78 Accepts]: Start accepts. Automaton has 20164 states and 22809 transitions. Word has length 360 [2022-01-10 00:24:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:52,334 INFO L470 AbstractCegarLoop]: Abstraction has 20164 states and 22809 transitions. [2022-01-10 00:24:52,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 20164 states and 22809 transitions. [2022-01-10 00:24:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-01-10 00:24:52,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:52,347 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:52,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:24:52,347 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1187546287, now seen corresponding path program 1 times [2022-01-10 00:24:52,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44098606] [2022-01-10 00:24:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:52,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:24:52,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:52,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44098606] [2022-01-10 00:24:52,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44098606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:52,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:52,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:52,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440600041] [2022-01-10 00:24:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:52,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:52,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:52,460 INFO L87 Difference]: Start difference. First operand 20164 states and 22809 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:54,133 INFO L93 Difference]: Finished difference Result 45882 states and 51904 transitions. [2022-01-10 00:24:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:54,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 381 [2022-01-10 00:24:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:54,164 INFO L225 Difference]: With dead ends: 45882 [2022-01-10 00:24:54,164 INFO L226 Difference]: Without dead ends: 25720 [2022-01-10 00:24:54,181 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 00:24:54,183 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 416 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:54,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 765 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:24:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25720 states. [2022-01-10 00:24:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25720 to 20153. [2022-01-10 00:24:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20153 states, 20152 states have (on average 1.1310539896784437) internal successors, (22793), 20152 states have internal predecessors, (22793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 22793 transitions. [2022-01-10 00:24:54,503 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 22793 transitions. Word has length 381 [2022-01-10 00:24:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:54,505 INFO L470 AbstractCegarLoop]: Abstraction has 20153 states and 22793 transitions. [2022-01-10 00:24:54,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 22793 transitions. [2022-01-10 00:24:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-01-10 00:24:54,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:54,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:54,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:24:54,514 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1815556042, now seen corresponding path program 1 times [2022-01-10 00:24:54,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:54,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525877390] [2022-01-10 00:24:54,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:54,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-01-10 00:24:54,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:54,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525877390] [2022-01-10 00:24:54,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525877390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:54,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:54,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:54,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606971478] [2022-01-10 00:24:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:54,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:54,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:54,680 INFO L87 Difference]: Start difference. First operand 20153 states and 22793 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:56,437 INFO L93 Difference]: Finished difference Result 48404 states and 54963 transitions. [2022-01-10 00:24:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 382 [2022-01-10 00:24:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:56,468 INFO L225 Difference]: With dead ends: 48404 [2022-01-10 00:24:56,468 INFO L226 Difference]: Without dead ends: 28253 [2022-01-10 00:24:56,484 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 00:24:56,484 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 506 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:56,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 252 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:24:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28253 states. [2022-01-10 00:24:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28253 to 28236. [2022-01-10 00:24:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28236 states, 28235 states have (on average 1.1271117407472995) internal successors, (31824), 28235 states have internal predecessors, (31824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28236 states to 28236 states and 31824 transitions. [2022-01-10 00:24:56,920 INFO L78 Accepts]: Start accepts. Automaton has 28236 states and 31824 transitions. Word has length 382 [2022-01-10 00:24:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:56,921 INFO L470 AbstractCegarLoop]: Abstraction has 28236 states and 31824 transitions. [2022-01-10 00:24:56,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 28236 states and 31824 transitions. [2022-01-10 00:24:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-01-10 00:24:56,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:56,988 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:56,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:24:56,988 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:56,989 INFO L85 PathProgramCache]: Analyzing trace with hash -782379493, now seen corresponding path program 1 times [2022-01-10 00:24:56,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:56,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158184895] [2022-01-10 00:24:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:56,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 182 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:24:57,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:57,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158184895] [2022-01-10 00:24:57,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158184895] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:24:57,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693785702] [2022-01-10 00:24:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:57,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:24:57,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:57,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:24:57,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:24:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:57,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:24:57,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:24:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 182 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:24:58,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:24:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:24:58,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693785702] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:24:58,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:24:58,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:24:58,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639443191] [2022-01-10 00:24:58,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:58,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:24:58,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:58,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:24:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:24:58,865 INFO L87 Difference]: Start difference. First operand 28236 states and 31824 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:01,625 INFO L93 Difference]: Finished difference Result 78207 states and 87757 transitions. [2022-01-10 00:25:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:25:01,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 389 [2022-01-10 00:25:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:01,677 INFO L225 Difference]: With dead ends: 78207 [2022-01-10 00:25:01,677 INFO L226 Difference]: Without dead ends: 48267 [2022-01-10 00:25:01,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:25:01,701 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 724 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:01,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 208 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:25:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48267 states. [2022-01-10 00:25:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48267 to 44010. [2022-01-10 00:25:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44010 states, 44009 states have (on average 1.1212933718103115) internal successors, (49347), 44009 states have internal predecessors, (49347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44010 states to 44010 states and 49347 transitions. [2022-01-10 00:25:02,204 INFO L78 Accepts]: Start accepts. Automaton has 44010 states and 49347 transitions. Word has length 389 [2022-01-10 00:25:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:02,204 INFO L470 AbstractCegarLoop]: Abstraction has 44010 states and 49347 transitions. [2022-01-10 00:25:02,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 44010 states and 49347 transitions. [2022-01-10 00:25:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-01-10 00:25:02,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:02,211 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:02,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:25:02,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-10 00:25:02,428 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1853110820, now seen corresponding path program 1 times [2022-01-10 00:25:02,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:02,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203179409] [2022-01-10 00:25:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:02,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-01-10 00:25:02,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:02,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203179409] [2022-01-10 00:25:02,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203179409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:02,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:02,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:02,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434864840] [2022-01-10 00:25:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:02,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:02,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:02,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:02,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:02,555 INFO L87 Difference]: Start difference. First operand 44010 states and 49347 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:04,518 INFO L93 Difference]: Finished difference Result 102049 states and 114541 transitions. [2022-01-10 00:25:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:04,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 425 [2022-01-10 00:25:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:04,579 INFO L225 Difference]: With dead ends: 102049 [2022-01-10 00:25:04,579 INFO L226 Difference]: Without dead ends: 51647 [2022-01-10 00:25:04,610 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 00:25:04,611 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 499 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:04,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 735 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:25:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51647 states. [2022-01-10 00:25:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51647 to 51641. [2022-01-10 00:25:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51641 states, 51640 states have (on average 1.1066421378776143) internal successors, (57147), 51640 states have internal predecessors, (57147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51641 states to 51641 states and 57147 transitions. [2022-01-10 00:25:05,325 INFO L78 Accepts]: Start accepts. Automaton has 51641 states and 57147 transitions. Word has length 425 [2022-01-10 00:25:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:05,325 INFO L470 AbstractCegarLoop]: Abstraction has 51641 states and 57147 transitions. [2022-01-10 00:25:05,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 51641 states and 57147 transitions. [2022-01-10 00:25:05,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-01-10 00:25:05,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:05,332 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:25:05,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:25:05,332 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:05,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1846343728, now seen corresponding path program 1 times [2022-01-10 00:25:05,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:05,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779467954] [2022-01-10 00:25:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:05,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:25:05,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:05,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779467954] [2022-01-10 00:25:05,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779467954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:05,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:05,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:25:05,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380604997] [2022-01-10 00:25:05,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:05,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:25:05,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:25:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:25:05,472 INFO L87 Difference]: Start difference. First operand 51641 states and 57147 transitions. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:07,988 INFO L93 Difference]: Finished difference Result 132682 states and 146542 transitions. [2022-01-10 00:25:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:25:07,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 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 427 [2022-01-10 00:25:07,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:08,233 INFO L225 Difference]: With dead ends: 132682 [2022-01-10 00:25:08,234 INFO L226 Difference]: Without dead ends: 81043 [2022-01-10 00:25:08,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:25:08,251 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 771 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:08,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 165 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:25:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81043 states. [2022-01-10 00:25:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 77208. [2022-01-10 00:25:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77208 states, 77207 states have (on average 1.0991619930835288) internal successors, (84863), 77207 states have internal predecessors, (84863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77208 states to 77208 states and 84863 transitions. [2022-01-10 00:25:09,267 INFO L78 Accepts]: Start accepts. Automaton has 77208 states and 84863 transitions. Word has length 427 [2022-01-10 00:25:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:09,267 INFO L470 AbstractCegarLoop]: Abstraction has 77208 states and 84863 transitions. [2022-01-10 00:25:09,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 77208 states and 84863 transitions. [2022-01-10 00:25:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-01-10 00:25:09,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:09,276 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:25:09,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:25:09,276 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2015821910, now seen corresponding path program 1 times [2022-01-10 00:25:09,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:09,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911995522] [2022-01-10 00:25:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:09,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-01-10 00:25:09,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:09,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911995522] [2022-01-10 00:25:09,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911995522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:09,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:09,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:09,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021150202] [2022-01-10 00:25:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:09,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:09,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:09,530 INFO L87 Difference]: Start difference. First operand 77208 states and 84863 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:11,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:11,383 INFO L93 Difference]: Finished difference Result 162093 states and 178526 transitions. [2022-01-10 00:25:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:11,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 470 [2022-01-10 00:25:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:11,526 INFO L225 Difference]: With dead ends: 162093 [2022-01-10 00:25:11,526 INFO L226 Difference]: Without dead ends: 84457 [2022-01-10 00:25:11,567 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 00:25:11,569 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 335 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:11,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 794 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:25:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84457 states. [2022-01-10 00:25:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84457 to 81046. [2022-01-10 00:25:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81046 states, 81045 states have (on average 1.096477265716577) internal successors, (88864), 81045 states have internal predecessors, (88864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81046 states to 81046 states and 88864 transitions. [2022-01-10 00:25:12,805 INFO L78 Accepts]: Start accepts. Automaton has 81046 states and 88864 transitions. Word has length 470 [2022-01-10 00:25:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:12,805 INFO L470 AbstractCegarLoop]: Abstraction has 81046 states and 88864 transitions. [2022-01-10 00:25:12,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 81046 states and 88864 transitions. [2022-01-10 00:25:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-01-10 00:25:12,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:12,814 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:25:12,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:25:12,814 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash 233794554, now seen corresponding path program 1 times [2022-01-10 00:25:12,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:12,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360720957] [2022-01-10 00:25:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:12,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:25:13,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360720957] [2022-01-10 00:25:13,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360720957] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540470005] [2022-01-10 00:25:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:13,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:25:13,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:25:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:25:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:13,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 00:25:13,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:25:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:25:14,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:25:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 267 proven. 82 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 00:25:17,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540470005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:25:17,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:25:17,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-01-10 00:25:17,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289295585] [2022-01-10 00:25:17,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:25:17,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 00:25:17,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:17,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 00:25:17,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:25:17,132 INFO L87 Difference]: Start difference. First operand 81046 states and 88864 transitions. Second operand has 8 states, 8 states have (on average 116.125) internal successors, (929), 7 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:22,688 INFO L93 Difference]: Finished difference Result 198688 states and 218557 transitions. [2022-01-10 00:25:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 00:25:22,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 116.125) internal successors, (929), 7 states have internal predecessors, (929), 0 states have call successors, (0), 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 483 [2022-01-10 00:25:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:22,817 INFO L225 Difference]: With dead ends: 198688 [2022-01-10 00:25:22,817 INFO L226 Difference]: Without dead ends: 117644 [2022-01-10 00:25:22,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:25:22,839 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 3732 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 1291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3732 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 5720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1291 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:22,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3732 Valid, 230 Invalid, 5720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1291 Valid, 4429 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 00:25:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117644 states. [2022-01-10 00:25:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117644 to 102730. [2022-01-10 00:25:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102730 states, 102729 states have (on average 1.0995531933533862) internal successors, (112956), 102729 states have internal predecessors, (112956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102730 states to 102730 states and 112956 transitions. [2022-01-10 00:25:24,466 INFO L78 Accepts]: Start accepts. Automaton has 102730 states and 112956 transitions. Word has length 483 [2022-01-10 00:25:24,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:24,466 INFO L470 AbstractCegarLoop]: Abstraction has 102730 states and 112956 transitions. [2022-01-10 00:25:24,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.125) internal successors, (929), 7 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 102730 states and 112956 transitions. [2022-01-10 00:25:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-01-10 00:25:24,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:24,716 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:24,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:25:24,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-10 00:25:24,937 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:24,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1207690160, now seen corresponding path program 1 times [2022-01-10 00:25:24,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:24,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639220372] [2022-01-10 00:25:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:24,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:25:25,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:25,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639220372] [2022-01-10 00:25:25,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639220372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:25,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:25,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:25:25,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565037937] [2022-01-10 00:25:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:25,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:25:25,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:25:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:25:25,111 INFO L87 Difference]: Start difference. First operand 102730 states and 112956 transitions. Second operand has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:28,268 INFO L93 Difference]: Finished difference Result 222502 states and 245137 transitions. [2022-01-10 00:25:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:25:28,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 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 611 [2022-01-10 00:25:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:28,455 INFO L225 Difference]: With dead ends: 222502 [2022-01-10 00:25:28,456 INFO L226 Difference]: Without dead ends: 117629 [2022-01-10 00:25:28,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:25:28,540 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 535 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:28,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 677 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:25:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117629 states. [2022-01-10 00:25:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117629 to 112515. [2022-01-10 00:25:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112515 states, 112514 states have (on average 1.0970990276765558) internal successors, (123439), 112514 states have internal predecessors, (123439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112515 states to 112515 states and 123439 transitions. [2022-01-10 00:25:30,089 INFO L78 Accepts]: Start accepts. Automaton has 112515 states and 123439 transitions. Word has length 611 [2022-01-10 00:25:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:30,089 INFO L470 AbstractCegarLoop]: Abstraction has 112515 states and 123439 transitions. [2022-01-10 00:25:30,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:25:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 112515 states and 123439 transitions. [2022-01-10 00:25:30,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2022-01-10 00:25:30,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:30,106 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:25:30,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 00:25:30,106 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash -652933035, now seen corresponding path program 1 times [2022-01-10 00:25:30,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772576425] [2022-01-10 00:25:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:30,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-10 00:25:30,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:30,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772576425] [2022-01-10 00:25:30,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772576425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:30,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:30,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:30,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884845704] [2022-01-10 00:25:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:30,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:30,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:30,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:30,284 INFO L87 Difference]: Start difference. First operand 112515 states and 123439 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)