/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:48:32,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:48:32,089 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:48:32,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:48:32,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:48:32,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:48:32,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:48:32,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:48:32,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:48:32,126 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:48:32,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:48:32,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:48:32,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:48:32,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:48:32,128 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:48:32,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:48:32,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:48:32,129 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:48:32,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:48:32,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:48:32,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:48:32,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:48:32,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:48:32,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:48:32,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:48:32,131 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:48:32,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:48:32,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:48:32,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:48:32,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:48:32,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:48:32,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:48:32,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:48:32,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:48:32,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:48:32,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:48:32,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:48:32,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:48:32,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:48:32,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:48:32,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:48:32,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:48:32,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:48:32,135 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:48:32,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:48:32,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:48:32,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:48:32,366 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:48:32,366 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:48:32,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2023-12-15 18:48:33,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:48:33,700 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:48:33,701 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2023-12-15 18:48:33,725 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de18a765c/33cf5e5c4383401aac92d263e47ab7d9/FLAG01d3def38 [2023-12-15 18:48:33,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de18a765c/33cf5e5c4383401aac92d263e47ab7d9 [2023-12-15 18:48:33,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:48:33,741 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:48:33,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:48:33,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:48:33,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:48:33,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:48:33" (1/1) ... [2023-12-15 18:48:33,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717284b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:33, skipping insertion in model container [2023-12-15 18:48:33,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:48:33" (1/1) ... [2023-12-15 18:48:33,829 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:48:34,025 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c[2698,2711] [2023-12-15 18:48:34,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:48:34,727 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:48:34,747 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c[2698,2711] [2023-12-15 18:48:35,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:48:35,075 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:48:35,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35 WrapperNode [2023-12-15 18:48:35,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:48:35,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:48:35,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:48:35,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:48:35,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,409 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2023-12-15 18:48:35,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:48:35,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:48:35,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:48:35,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:48:35,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,626 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:48:35,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,626 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:48:35,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:48:35,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:48:35,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:48:35,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (1/1) ... [2023-12-15 18:48:35,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:48:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:48:35,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:48:35,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:48:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:48:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:48:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:48:35,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:48:35,945 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:48:35,946 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:48:38,824 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:48:38,863 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:48:38,864 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:48:38,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:48:38 BoogieIcfgContainer [2023-12-15 18:48:38,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:48:38,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:48:38,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:48:38,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:48:38,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:48:33" (1/3) ... [2023-12-15 18:48:38,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176e870e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:48:38, skipping insertion in model container [2023-12-15 18:48:38,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:48:35" (2/3) ... [2023-12-15 18:48:38,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176e870e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:48:38, skipping insertion in model container [2023-12-15 18:48:38,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:48:38" (3/3) ... [2023-12-15 18:48:38,869 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2023-12-15 18:48:38,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:48:38,881 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:48:38,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:48:38,924 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18d9be4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:48:38,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:48:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-15 18:48:38,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:38,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:38,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1050455851, now seen corresponding path program 1 times [2023-12-15 18:48:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802229678] [2023-12-15 18:48:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:39,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:39,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802229678] [2023-12-15 18:48:39,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802229678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:39,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:39,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024074291] [2023-12-15 18:48:39,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:39,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:48:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:39,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:48:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:48:39,061 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:39,125 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-15 18:48:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:48:39,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-15 18:48:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:39,144 INFO L225 Difference]: With dead ends: 1511 [2023-12-15 18:48:39,144 INFO L226 Difference]: Without dead ends: 754 [2023-12-15 18:48:39,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:48:39,151 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:39,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:48:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-15 18:48:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-15 18:48:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-15 18:48:39,205 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 18 [2023-12-15 18:48:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:39,206 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-15 18:48:39,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-15 18:48:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-15 18:48:39,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:39,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:48:39,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:39,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 97221474, now seen corresponding path program 1 times [2023-12-15 18:48:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265211573] [2023-12-15 18:48:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265211573] [2023-12-15 18:48:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265211573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:39,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:39,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377615373] [2023-12-15 18:48:39,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:39,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:39,286 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:41,993 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-15 18:48:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:41,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-12-15 18:48:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:41,999 INFO L225 Difference]: With dead ends: 2258 [2023-12-15 18:48:41,999 INFO L226 Difference]: Without dead ends: 1505 [2023-12-15 18:48:42,000 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:48:42,002 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 850 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:42,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 113 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:48:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-15 18:48:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-15 18:48:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.846409574468085) internal successors, (2777), 1504 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2777 transitions. [2023-12-15 18:48:42,033 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2777 transitions. Word has length 18 [2023-12-15 18:48:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:42,034 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2777 transitions. [2023-12-15 18:48:42,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2777 transitions. [2023-12-15 18:48:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 18:48:42,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:42,036 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:48:42,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:48:42,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:42,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash -763645331, now seen corresponding path program 1 times [2023-12-15 18:48:42,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:42,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725511667] [2023-12-15 18:48:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:42,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725511667] [2023-12-15 18:48:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725511667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:42,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109727416] [2023-12-15 18:48:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:42,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:42,196 INFO L87 Difference]: Start difference. First operand 1505 states and 2777 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:44,609 INFO L93 Difference]: Finished difference Result 3760 states and 6892 transitions. [2023-12-15 18:48:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:44,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-15 18:48:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:44,616 INFO L225 Difference]: With dead ends: 3760 [2023-12-15 18:48:44,616 INFO L226 Difference]: Without dead ends: 2256 [2023-12-15 18:48:44,618 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:48:44,618 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:44,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 446 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:48:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-12-15 18:48:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2023-12-15 18:48:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.4421286031042129) internal successors, (3252), 2255 states have internal predecessors, (3252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3252 transitions. [2023-12-15 18:48:44,643 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3252 transitions. Word has length 87 [2023-12-15 18:48:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:44,647 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3252 transitions. [2023-12-15 18:48:44,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3252 transitions. [2023-12-15 18:48:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-15 18:48:44,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:44,655 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:48:44,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:48:44,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:44,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:44,657 INFO L85 PathProgramCache]: Analyzing trace with hash -585972718, now seen corresponding path program 1 times [2023-12-15 18:48:44,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:44,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382125324] [2023-12-15 18:48:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:44,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:44,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382125324] [2023-12-15 18:48:44,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382125324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:48:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468462850] [2023-12-15 18:48:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:44,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:48:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:48:44,927 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) [2023-12-15 18:48:44,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:48:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:44,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:48:44,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:48:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:45,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:48:45,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468462850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:45,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:48:45,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 18:48:45,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893413504] [2023-12-15 18:48:45,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:45,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:45,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:45,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:48:45,019 INFO L87 Difference]: Start difference. First operand 2256 states and 3252 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:47,779 INFO L93 Difference]: Finished difference Result 6764 states and 9753 transitions. [2023-12-15 18:48:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:47,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-15 18:48:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:47,791 INFO L225 Difference]: With dead ends: 6764 [2023-12-15 18:48:47,792 INFO L226 Difference]: Without dead ends: 4509 [2023-12-15 18:48:47,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:48:47,801 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 750 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:47,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 616 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:48:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2023-12-15 18:48:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4509. [2023-12-15 18:48:47,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 4508 states have (on average 1.2930346051464063) internal successors, (5829), 4508 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 5829 transitions. [2023-12-15 18:48:47,944 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 5829 transitions. Word has length 89 [2023-12-15 18:48:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:47,945 INFO L495 AbstractCegarLoop]: Abstraction has 4509 states and 5829 transitions. [2023-12-15 18:48:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 5829 transitions. [2023-12-15 18:48:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-15 18:48:47,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:47,948 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:48:47,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:48:48,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:48:48,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:48,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:48,154 INFO L85 PathProgramCache]: Analyzing trace with hash -656006911, now seen corresponding path program 1 times [2023-12-15 18:48:48,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:48,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999584538] [2023-12-15 18:48:48,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:48,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:48,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999584538] [2023-12-15 18:48:48,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999584538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:48,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:48,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:48,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245205324] [2023-12-15 18:48:48,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:48,420 INFO L87 Difference]: Start difference. First operand 4509 states and 5829 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:52,214 INFO L93 Difference]: Finished difference Result 14274 states and 18283 transitions. [2023-12-15 18:48:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:52,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-15 18:48:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:52,241 INFO L225 Difference]: With dead ends: 14274 [2023-12-15 18:48:52,242 INFO L226 Difference]: Without dead ends: 9766 [2023-12-15 18:48:52,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:48:52,250 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2181 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4713 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 5424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:52,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 162 Invalid, 5424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4713 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-15 18:48:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-15 18:48:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-12-15 18:48:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2558115719406042) internal successors, (12263), 9765 states have internal predecessors, (12263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12263 transitions. [2023-12-15 18:48:52,485 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12263 transitions. Word has length 95 [2023-12-15 18:48:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:52,486 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 12263 transitions. [2023-12-15 18:48:52,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:52,486 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12263 transitions. [2023-12-15 18:48:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-15 18:48:52,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:52,487 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:52,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:48:52,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:52,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1797523887, now seen corresponding path program 1 times [2023-12-15 18:48:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:52,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628048323] [2023-12-15 18:48:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:52,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:48:52,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:52,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628048323] [2023-12-15 18:48:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628048323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:52,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:52,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:52,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684986815] [2023-12-15 18:48:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:52,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:48:52,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:52,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:48:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:48:52,712 INFO L87 Difference]: Start difference. First operand 9766 states and 12263 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:55,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:55,362 INFO L93 Difference]: Finished difference Result 21821 states and 27289 transitions. [2023-12-15 18:48:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:48:55,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2023-12-15 18:48:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:55,402 INFO L225 Difference]: With dead ends: 21821 [2023-12-15 18:48:55,402 INFO L226 Difference]: Without dead ends: 12770 [2023-12-15 18:48:55,410 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:48:55,412 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 702 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:55,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 609 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:48:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12770 states. [2023-12-15 18:48:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12770 to 12019. [2023-12-15 18:48:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 12018 states have (on average 1.2085205525045766) internal successors, (14524), 12018 states have internal predecessors, (14524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 14524 transitions. [2023-12-15 18:48:55,619 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 14524 transitions. Word has length 166 [2023-12-15 18:48:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:55,620 INFO L495 AbstractCegarLoop]: Abstraction has 12019 states and 14524 transitions. [2023-12-15 18:48:55,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 14524 transitions. [2023-12-15 18:48:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-15 18:48:55,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:55,622 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:48:55,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:48:55,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:55,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1342288760, now seen corresponding path program 1 times [2023-12-15 18:48:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:55,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956282619] [2023-12-15 18:48:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-15 18:48:55,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956282619] [2023-12-15 18:48:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956282619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:55,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:48:55,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900335193] [2023-12-15 18:48:55,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:55,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:55,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:55,796 INFO L87 Difference]: Start difference. First operand 12019 states and 14524 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:48:58,374 INFO L93 Difference]: Finished difference Result 31549 states and 38844 transitions. [2023-12-15 18:48:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:48:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2023-12-15 18:48:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:48:58,403 INFO L225 Difference]: With dead ends: 31549 [2023-12-15 18:48:58,404 INFO L226 Difference]: Without dead ends: 20282 [2023-12-15 18:48:58,415 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:48:58,416 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:48:58,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 310 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:48:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20282 states. [2023-12-15 18:48:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20282 to 18778. [2023-12-15 18:48:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18778 states, 18777 states have (on average 1.1888480587953347) internal successors, (22323), 18777 states have internal predecessors, (22323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 22323 transitions. [2023-12-15 18:48:58,610 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 22323 transitions. Word has length 231 [2023-12-15 18:48:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:48:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 18778 states and 22323 transitions. [2023-12-15 18:48:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:48:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 22323 transitions. [2023-12-15 18:48:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-15 18:48:58,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:48:58,614 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-15 18:48:58,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:48:58,615 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:48:58,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:48:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash 766066275, now seen corresponding path program 1 times [2023-12-15 18:48:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:48:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981939352] [2023-12-15 18:48:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:48:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:48:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:48:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-15 18:48:58,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:48:58,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981939352] [2023-12-15 18:48:58,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981939352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:48:58,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:48:58,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:48:58,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752085739] [2023-12-15 18:48:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:48:58,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:48:58,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:48:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:48:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:48:58,807 INFO L87 Difference]: Start difference. First operand 18778 states and 22323 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:01,482 INFO L93 Difference]: Finished difference Result 43563 states and 53012 transitions. [2023-12-15 18:49:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:01,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 317 [2023-12-15 18:49:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:01,524 INFO L225 Difference]: With dead ends: 43563 [2023-12-15 18:49:01,524 INFO L226 Difference]: Without dead ends: 25537 [2023-12-15 18:49:01,540 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:01,540 INFO L413 NwaCegarLoop]: 1206 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:01,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1213 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:49:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25537 states. [2023-12-15 18:49:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25537 to 24035. [2023-12-15 18:49:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24035 states, 24034 states have (on average 1.1785387367895481) internal successors, (28325), 24034 states have internal predecessors, (28325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24035 states to 24035 states and 28325 transitions. [2023-12-15 18:49:01,791 INFO L78 Accepts]: Start accepts. Automaton has 24035 states and 28325 transitions. Word has length 317 [2023-12-15 18:49:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:01,791 INFO L495 AbstractCegarLoop]: Abstraction has 24035 states and 28325 transitions. [2023-12-15 18:49:01,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 24035 states and 28325 transitions. [2023-12-15 18:49:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-15 18:49:01,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:01,795 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:49:01,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:49:01,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:01,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash 332391241, now seen corresponding path program 1 times [2023-12-15 18:49:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573125593] [2023-12-15 18:49:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 18:49:02,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:02,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573125593] [2023-12-15 18:49:02,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573125593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:02,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:02,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147991650] [2023-12-15 18:49:02,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:02,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:02,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:02,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:02,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:02,063 INFO L87 Difference]: Start difference. First operand 24035 states and 28325 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:04,796 INFO L93 Difference]: Finished difference Result 60836 states and 71502 transitions. [2023-12-15 18:49:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 345 [2023-12-15 18:49:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:04,866 INFO L225 Difference]: With dead ends: 60836 [2023-12-15 18:49:04,866 INFO L226 Difference]: Without dead ends: 37553 [2023-12-15 18:49:04,888 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:04,890 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 635 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:04,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1244 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:49:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37553 states. [2023-12-15 18:49:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37553 to 35300. [2023-12-15 18:49:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35300 states, 35299 states have (on average 1.166860250998612) internal successors, (41189), 35299 states have internal predecessors, (41189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35300 states to 35300 states and 41189 transitions. [2023-12-15 18:49:05,239 INFO L78 Accepts]: Start accepts. Automaton has 35300 states and 41189 transitions. Word has length 345 [2023-12-15 18:49:05,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:05,240 INFO L495 AbstractCegarLoop]: Abstraction has 35300 states and 41189 transitions. [2023-12-15 18:49:05,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 35300 states and 41189 transitions. [2023-12-15 18:49:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-15 18:49:05,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:05,243 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:49:05,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:49:05,243 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:05,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:05,243 INFO L85 PathProgramCache]: Analyzing trace with hash 584454675, now seen corresponding path program 1 times [2023-12-15 18:49:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:05,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980953923] [2023-12-15 18:49:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-15 18:49:05,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:05,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980953923] [2023-12-15 18:49:05,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980953923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:05,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:05,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:05,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264497455] [2023-12-15 18:49:05,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:05,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:05,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:05,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:05,547 INFO L87 Difference]: Start difference. First operand 35300 states and 41189 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:08,504 INFO L93 Difference]: Finished difference Result 102892 states and 120517 transitions. [2023-12-15 18:49:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:08,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349 [2023-12-15 18:49:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:08,576 INFO L225 Difference]: With dead ends: 102892 [2023-12-15 18:49:08,576 INFO L226 Difference]: Without dead ends: 63838 [2023-12-15 18:49:08,627 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:08,627 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 774 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:08,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1312 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:49:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63838 states. [2023-12-15 18:49:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63838 to 53324. [2023-12-15 18:49:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53324 states, 53323 states have (on average 1.1311441591808413) internal successors, (60316), 53323 states have internal predecessors, (60316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53324 states to 53324 states and 60316 transitions. [2023-12-15 18:49:09,423 INFO L78 Accepts]: Start accepts. Automaton has 53324 states and 60316 transitions. Word has length 349 [2023-12-15 18:49:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:09,423 INFO L495 AbstractCegarLoop]: Abstraction has 53324 states and 60316 transitions. [2023-12-15 18:49:09,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 53324 states and 60316 transitions. [2023-12-15 18:49:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-15 18:49:09,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:09,429 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:09,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:49:09,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:09,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash 701728989, now seen corresponding path program 1 times [2023-12-15 18:49:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617079515] [2023-12-15 18:49:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-15 18:49:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617079515] [2023-12-15 18:49:09,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617079515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:09,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:09,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901363617] [2023-12-15 18:49:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:09,737 INFO L87 Difference]: Start difference. First operand 53324 states and 60316 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:12,321 INFO L93 Difference]: Finished difference Result 135185 states and 154638 transitions. [2023-12-15 18:49:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:12,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 356 [2023-12-15 18:49:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:12,405 INFO L225 Difference]: With dead ends: 135185 [2023-12-15 18:49:12,405 INFO L226 Difference]: Without dead ends: 82613 [2023-12-15 18:49:12,433 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:12,434 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 722 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:12,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1231 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 18:49:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82613 states. [2023-12-15 18:49:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82613 to 77356. [2023-12-15 18:49:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77356 states, 77355 states have (on average 1.1153642298493955) internal successors, (86279), 77355 states have internal predecessors, (86279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77356 states to 77356 states and 86279 transitions. [2023-12-15 18:49:13,508 INFO L78 Accepts]: Start accepts. Automaton has 77356 states and 86279 transitions. Word has length 356 [2023-12-15 18:49:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:13,508 INFO L495 AbstractCegarLoop]: Abstraction has 77356 states and 86279 transitions. [2023-12-15 18:49:13,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 77356 states and 86279 transitions. [2023-12-15 18:49:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-15 18:49:13,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:13,528 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:13,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:49:13,529 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:13,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:13,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1959565287, now seen corresponding path program 1 times [2023-12-15 18:49:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:13,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316016439] [2023-12-15 18:49:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:13,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-12-15 18:49:13,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316016439] [2023-12-15 18:49:13,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316016439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:13,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:13,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:13,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128959152] [2023-12-15 18:49:13,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:13,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:13,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:13,812 INFO L87 Difference]: Start difference. First operand 77356 states and 86279 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:16,728 INFO L93 Difference]: Finished difference Result 165225 states and 183749 transitions. [2023-12-15 18:49:16,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:16,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2023-12-15 18:49:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:16,818 INFO L225 Difference]: With dead ends: 165225 [2023-12-15 18:49:16,818 INFO L226 Difference]: Without dead ends: 88621 [2023-12-15 18:49:16,854 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:16,855 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 767 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:16,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1245 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:49:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88621 states. [2023-12-15 18:49:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88621 to 85617. [2023-12-15 18:49:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85617 states, 85616 states have (on average 1.0999696318445151) internal successors, (94175), 85616 states have internal predecessors, (94175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85617 states to 85617 states and 94175 transitions. [2023-12-15 18:49:17,869 INFO L78 Accepts]: Start accepts. Automaton has 85617 states and 94175 transitions. Word has length 377 [2023-12-15 18:49:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:17,869 INFO L495 AbstractCegarLoop]: Abstraction has 85617 states and 94175 transitions. [2023-12-15 18:49:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:17,869 INFO L276 IsEmpty]: Start isEmpty. Operand 85617 states and 94175 transitions. [2023-12-15 18:49:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-12-15 18:49:18,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:18,033 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:18,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:49:18,033 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:18,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash -988880489, now seen corresponding path program 1 times [2023-12-15 18:49:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826133278] [2023-12-15 18:49:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:18,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-12-15 18:49:18,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826133278] [2023-12-15 18:49:18,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826133278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:18,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047188814] [2023-12-15 18:49:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:18,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:18,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:18,266 INFO L87 Difference]: Start difference. First operand 85617 states and 94175 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:20,678 INFO L93 Difference]: Finished difference Result 170482 states and 187593 transitions. [2023-12-15 18:49:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:20,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 453 [2023-12-15 18:49:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:20,768 INFO L225 Difference]: With dead ends: 170482 [2023-12-15 18:49:20,768 INFO L226 Difference]: Without dead ends: 85617 [2023-12-15 18:49:20,801 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:20,801 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 798 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:20,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 406 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:49:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85617 states. [2023-12-15 18:49:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85617 to 83364. [2023-12-15 18:49:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83364 states, 83363 states have (on average 1.0677518803306023) internal successors, (89011), 83363 states have internal predecessors, (89011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83364 states to 83364 states and 89011 transitions. [2023-12-15 18:49:21,780 INFO L78 Accepts]: Start accepts. Automaton has 83364 states and 89011 transitions. Word has length 453 [2023-12-15 18:49:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:21,781 INFO L495 AbstractCegarLoop]: Abstraction has 83364 states and 89011 transitions. [2023-12-15 18:49:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 83364 states and 89011 transitions. [2023-12-15 18:49:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-15 18:49:21,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:21,791 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:49:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:49:21,791 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:21,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1182188283, now seen corresponding path program 1 times [2023-12-15 18:49:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:21,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265780212] [2023-12-15 18:49:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 436 proven. 229 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 18:49:22,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265780212] [2023-12-15 18:49:22,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265780212] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:49:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930825436] [2023-12-15 18:49:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:22,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:49:22,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:49:22,491 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) [2023-12-15 18:49:22,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:49:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:22,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:49:22,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:49:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-12-15 18:49:22,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:49:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930825436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:22,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:49:22,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 18:49:22,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048269516] [2023-12-15 18:49:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:22,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:22,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:22,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:49:22,838 INFO L87 Difference]: Start difference. First operand 83364 states and 89011 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:25,690 INFO L93 Difference]: Finished difference Result 187004 states and 201028 transitions. [2023-12-15 18:49:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 520 [2023-12-15 18:49:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:25,811 INFO L225 Difference]: With dead ends: 187004 [2023-12-15 18:49:25,811 INFO L226 Difference]: Without dead ends: 104392 [2023-12-15 18:49:25,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:49:25,846 INFO L413 NwaCegarLoop]: 1381 mSDtfsCounter, 649 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:25,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1388 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:49:25,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104392 states. [2023-12-15 18:49:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104392 to 93127. [2023-12-15 18:49:26,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93127 states, 93126 states have (on average 1.0624744969181539) internal successors, (98944), 93126 states have internal predecessors, (98944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93127 states to 93127 states and 98944 transitions. [2023-12-15 18:49:27,043 INFO L78 Accepts]: Start accepts. Automaton has 93127 states and 98944 transitions. Word has length 520 [2023-12-15 18:49:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:27,044 INFO L495 AbstractCegarLoop]: Abstraction has 93127 states and 98944 transitions. [2023-12-15 18:49:27,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 93127 states and 98944 transitions. [2023-12-15 18:49:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-12-15 18:49:27,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:27,060 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 18:49:27,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:49:27,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 18:49:27,265 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:27,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:27,265 INFO L85 PathProgramCache]: Analyzing trace with hash -748965775, now seen corresponding path program 1 times [2023-12-15 18:49:27,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:27,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282784370] [2023-12-15 18:49:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:27,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2023-12-15 18:49:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:27,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282784370] [2023-12-15 18:49:27,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282784370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:27,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:27,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532802891] [2023-12-15 18:49:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:27,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:49:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:49:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:49:27,725 INFO L87 Difference]: Start difference. First operand 93127 states and 98944 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:49:30,868 INFO L93 Difference]: Finished difference Result 226807 states and 241559 transitions. [2023-12-15 18:49:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:49:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 596 [2023-12-15 18:49:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:49:31,032 INFO L225 Difference]: With dead ends: 226807 [2023-12-15 18:49:31,032 INFO L226 Difference]: Without dead ends: 134432 [2023-12-15 18:49:31,085 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:31,085 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 746 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:31,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1300 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:49:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134432 states. [2023-12-15 18:49:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134432 to 126171. [2023-12-15 18:49:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126171 states, 126170 states have (on average 1.055924546247127) internal successors, (133226), 126170 states have internal predecessors, (133226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126171 states to 126171 states and 133226 transitions. [2023-12-15 18:49:32,865 INFO L78 Accepts]: Start accepts. Automaton has 126171 states and 133226 transitions. Word has length 596 [2023-12-15 18:49:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:49:32,866 INFO L495 AbstractCegarLoop]: Abstraction has 126171 states and 133226 transitions. [2023-12-15 18:49:32,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:49:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 126171 states and 133226 transitions. [2023-12-15 18:49:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2023-12-15 18:49:33,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:49:33,089 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:33,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:49:33,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:49:33,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:49:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1225220009, now seen corresponding path program 1 times [2023-12-15 18:49:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:49:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993839167] [2023-12-15 18:49:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:49:33,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:49:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:49:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-12-15 18:49:33,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:49:33,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993839167] [2023-12-15 18:49:33,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993839167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:49:33,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:49:33,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:49:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597226591] [2023-12-15 18:49:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:49:33,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:49:33,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:49:33,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:49:33,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:49:33,832 INFO L87 Difference]: Start difference. First operand 126171 states and 133226 transitions. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:49:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:49:35,554 INFO L412 NwaCegarLoop]: 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 [2023-12-15 18:49:35,555 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 716 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:49:35,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 20 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:49:35,556 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:49:35,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:49:35,557 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (126171states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (25473 states constructed, input type IntersectNwa). [2023-12-15 18:49:35,560 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:49:35,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:49:35,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:49:35 BoogieIcfgContainer [2023-12-15 18:49:35,563 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:49:35,563 INFO L158 Benchmark]: Toolchain (without parser) took 61821.63ms. Allocated memory was 162.5MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 105.7MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-15 18:49:35,563 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 162.5MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:49:35,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1331.65ms. Allocated memory was 162.5MB in the beginning and 212.9MB in the end (delta: 50.3MB). Free memory was 105.7MB in the beginning and 137.2MB in the end (delta: -31.5MB). Peak memory consumption was 110.0MB. Max. memory is 8.0GB. [2023-12-15 18:49:35,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 333.01ms. Allocated memory is still 212.9MB. Free memory was 137.2MB in the beginning and 113.6MB in the end (delta: 23.6MB). Peak memory consumption was 101.2MB. Max. memory is 8.0GB. [2023-12-15 18:49:35,563 INFO L158 Benchmark]: Boogie Preprocessor took 435.36ms. Allocated memory was 212.9MB in the beginning and 425.7MB in the end (delta: 212.9MB). Free memory was 113.6MB in the beginning and 284.6MB in the end (delta: -171.0MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. [2023-12-15 18:49:35,564 INFO L158 Benchmark]: RCFGBuilder took 3018.70ms. Allocated memory was 425.7MB in the beginning and 647.0MB in the end (delta: 221.2MB). Free memory was 284.6MB in the beginning and 493.7MB in the end (delta: -209.1MB). Peak memory consumption was 280.1MB. Max. memory is 8.0GB. [2023-12-15 18:49:35,565 INFO L158 Benchmark]: TraceAbstraction took 56696.85ms. Allocated memory was 647.0MB in the beginning and 5.3GB in the end (delta: 4.7GB). Free memory was 493.1MB in the beginning and 3.3GB in the end (delta: -2.8GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-15 18:49:35,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 162.5MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1331.65ms. Allocated memory was 162.5MB in the beginning and 212.9MB in the end (delta: 50.3MB). Free memory was 105.7MB in the beginning and 137.2MB in the end (delta: -31.5MB). Peak memory consumption was 110.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 333.01ms. Allocated memory is still 212.9MB. Free memory was 137.2MB in the beginning and 113.6MB in the end (delta: 23.6MB). Peak memory consumption was 101.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 435.36ms. Allocated memory was 212.9MB in the beginning and 425.7MB in the end (delta: 212.9MB). Free memory was 113.6MB in the beginning and 284.6MB in the end (delta: -171.0MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3018.70ms. Allocated memory was 425.7MB in the beginning and 647.0MB in the end (delta: 221.2MB). Free memory was 284.6MB in the beginning and 493.7MB in the end (delta: -209.1MB). Peak memory consumption was 280.1MB. Max. memory is 8.0GB. * TraceAbstraction took 56696.85ms. Allocated memory was 647.0MB in the beginning and 5.3GB in the end (delta: 4.7GB). Free memory was 493.1MB in the beginning and 3.3GB in the end (delta: -2.8GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 79). Cancelled while NwaCegarLoop was constructing difference of abstraction (126171states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (25473 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.7s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 42.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12622 SdHoareTripleChecker+Valid, 37.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12622 mSDsluCounter, 13053 SdHoareTripleChecker+Invalid, 31.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 7939 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37428 IncrementalHoareTripleChecker+Invalid, 45367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7939 mSolverCounterUnsat, 12931 mSDtfsCounter, 37428 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 655 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126171occurred in iteration=15, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 46564 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 5329 NumberOfCodeBlocks, 5329 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5311 ConstructedInterpolants, 0 QuantifiedInterpolants, 14162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 845 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 4624/4857 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown