/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 16:58:13,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 16:58:13,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 16:58:13,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 16:58:13,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 16:58:13,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 16:58:13,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 16:58:13,991 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 16:58:13,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 16:58:13,994 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 16:58:13,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 16:58:13,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 16:58:13,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 16:58:13,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 16:58:13,996 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 16:58:13,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 16:58:13,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 16:58:13,997 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 16:58:13,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 16:58:13,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 16:58:13,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 16:58:13,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 16:58:13,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 16:58:13,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 16:58:13,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 16:58:13,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 16:58:13,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 16:58:13,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 16:58:13,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 16:58:13,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 16:58:14,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 16:58:14,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 16:58:14,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:58:14,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 16:58:14,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 16:58:14,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 16:58:14,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 16:58:14,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 16:58:14,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 16:58:14,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 16:58:14,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 16:58:14,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 16:58:14,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 16:58:14,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 16:58:14,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 16:58:14,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 16:58:14,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 16:58:14,207 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 16:58:14,208 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 16:58:14,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2023-12-20 16:58:15,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 16:58:15,797 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 16:58:15,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07.c [2023-12-20 16:58:15,829 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/154b0fd63/80a7fb8220e8445c9b577bffdcc5a522/FLAG3dda20086 [2023-12-20 16:58:15,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/154b0fd63/80a7fb8220e8445c9b577bffdcc5a522 [2023-12-20 16:58:15,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 16:58:15,847 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 16:58:15,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 16:58:15,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 16:58:15,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 16:58:15,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:58:15" (1/1) ... [2023-12-20 16:58:15,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23066e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:15, skipping insertion in model container [2023-12-20 16:58:15,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:58:15" (1/1) ... [2023-12-20 16:58:15,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 16:58:16,190 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/Problem13_label07.c[3249,3262] [2023-12-20 16:58:17,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:58:17,048 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 16:58:17,067 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/Problem13_label07.c[3249,3262] [2023-12-20 16:58:17,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:58:17,588 INFO L206 MainTranslator]: Completed translation [2023-12-20 16:58:17,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17 WrapperNode [2023-12-20 16:58:17,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 16:58:17,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 16:58:17,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 16:58:17,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 16:58:17,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:17,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,346 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 16:58:18,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 16:58:18,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 16:58:18,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 16:58:18,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 16:58:18,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,690 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]. [2023-12-20 16:58:18,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:18,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:19,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 16:58:19,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 16:58:19,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 16:58:19,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 16:58:19,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (1/1) ... [2023-12-20 16:58:19,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:58:19,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:58:19,114 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) [2023-12-20 16:58:19,133 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 [2023-12-20 16:58:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 16:58:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 16:58:19,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 16:58:19,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 16:58:19,215 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 16:58:19,217 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 16:58:23,571 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 16:58:23,619 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 16:58:23,619 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 16:58:23,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:58:23 BoogieIcfgContainer [2023-12-20 16:58:23,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 16:58:23,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 16:58:23,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 16:58:23,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 16:58:23,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 04:58:15" (1/3) ... [2023-12-20 16:58:23,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb7a847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:58:23, skipping insertion in model container [2023-12-20 16:58:23,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:58:17" (2/3) ... [2023-12-20 16:58:23,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb7a847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:58:23, skipping insertion in model container [2023-12-20 16:58:23,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:58:23" (3/3) ... [2023-12-20 16:58:23,626 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2023-12-20 16:58:23,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 16:58:23,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 16:58:23,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 16:58:23,704 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;@62c06129, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 16:58:23,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 16:58:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-20 16:58:23,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:23,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:23,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:23,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1017858262, now seen corresponding path program 1 times [2023-12-20 16:58:23,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:23,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931167488] [2023-12-20 16:58:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:23,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:23,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:23,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931167488] [2023-12-20 16:58:23,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931167488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:23,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:23,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343104717] [2023-12-20 16:58:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:23,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 16:58:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 16:58:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 16:58:23,893 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:23,977 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 16:58:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 16:58:23,980 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-12-20 16:58:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:23,997 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 16:58:23,997 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 16:58:24,004 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 [2023-12-20 16:58:24,006 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 [2023-12-20 16:58:24,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 16:58:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 16:58:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 16:58:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 16:58:24,078 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 20 [2023-12-20 16:58:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:24,078 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 16:58:24,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 16:58:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-20 16:58:24,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:24,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:24,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 16:58:24,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:24,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:24,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1418202880, now seen corresponding path program 1 times [2023-12-20 16:58:24,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:24,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231902742] [2023-12-20 16:58:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:24,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231902742] [2023-12-20 16:58:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231902742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:24,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:24,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:24,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693025829] [2023-12-20 16:58:24,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:24,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:24,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:24,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:24,214 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:27,865 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2023-12-20 16:58:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:27,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-12-20 16:58:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:27,872 INFO L225 Difference]: With dead ends: 2931 [2023-12-20 16:58:27,872 INFO L226 Difference]: Without dead ends: 1898 [2023-12-20 16:58:27,874 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 [2023-12-20 16:58:27,874 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 994 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:27,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 594 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 16:58:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-20 16:58:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2023-12-20 16:58:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2023-12-20 16:58:27,903 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 20 [2023-12-20 16:58:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:27,903 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2023-12-20 16:58:27,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2023-12-20 16:58:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 16:58:27,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:27,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:27,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 16:58:27,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:27,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash 350423467, now seen corresponding path program 1 times [2023-12-20 16:58:27,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:27,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669168239] [2023-12-20 16:58:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:27,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:28,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:28,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669168239] [2023-12-20 16:58:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669168239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200943856] [2023-12-20 16:58:28,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:28,128 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:31,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:31,899 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2023-12-20 16:58:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-12-20 16:58:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:31,993 INFO L225 Difference]: With dead ends: 5383 [2023-12-20 16:58:31,994 INFO L226 Difference]: Without dead ends: 3491 [2023-12-20 16:58:31,995 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 [2023-12-20 16:58:31,996 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:31,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 16:58:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-20 16:58:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2023-12-20 16:58:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.5385497277156779) internal successors, (5368), 3489 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2023-12-20 16:58:32,055 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 85 [2023-12-20 16:58:32,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:32,057 INFO L495 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2023-12-20 16:58:32,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2023-12-20 16:58:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 16:58:32,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:32,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:32,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 16:58:32,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:32,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 300510096, now seen corresponding path program 1 times [2023-12-20 16:58:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269050985] [2023-12-20 16:58:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:32,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:32,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269050985] [2023-12-20 16:58:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269050985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:32,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:32,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:32,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010538584] [2023-12-20 16:58:32,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:32,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:32,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:32,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:32,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:32,181 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 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) [2023-12-20 16:58:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:35,710 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2023-12-20 16:58:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:35,710 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 [2023-12-20 16:58:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:35,752 INFO L225 Difference]: With dead ends: 10168 [2023-12-20 16:58:35,752 INFO L226 Difference]: Without dead ends: 6679 [2023-12-20 16:58:35,761 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 [2023-12-20 16:58:35,768 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:35,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 16:58:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2023-12-20 16:58:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2023-12-20 16:58:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 1.3752812359382032) internal successors, (9169), 6667 states have internal predecessors, (9169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2023-12-20 16:58:35,929 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 87 [2023-12-20 16:58:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:35,930 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2023-12-20 16:58:35,931 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) [2023-12-20 16:58:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2023-12-20 16:58:35,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 16:58:35,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:35,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:35,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 16:58:35,942 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:35,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2009907998, now seen corresponding path program 1 times [2023-12-20 16:58:35,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:35,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357363544] [2023-12-20 16:58:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:35,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:36,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357363544] [2023-12-20 16:58:36,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357363544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:36,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:36,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312384996] [2023-12-20 16:58:36,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:36,310 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:38,747 INFO L93 Difference]: Finished difference Result 14122 states and 19184 transitions. [2023-12-20 16:58:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:38,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-20 16:58:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:38,769 INFO L225 Difference]: With dead ends: 14122 [2023-12-20 16:58:38,769 INFO L226 Difference]: Without dead ends: 7455 [2023-12-20 16:58:38,777 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 [2023-12-20 16:58:38,777 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:38,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1213 Invalid, 2578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 16:58:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2023-12-20 16:58:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2023-12-20 16:58:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3363294875234772) internal successors, (9961), 7454 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2023-12-20 16:58:38,891 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 131 [2023-12-20 16:58:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:38,891 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2023-12-20 16:58:38,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2023-12-20 16:58:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 16:58:38,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:38,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:38,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 16:58:38,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:38,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash -511031928, now seen corresponding path program 1 times [2023-12-20 16:58:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:38,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408440565] [2023-12-20 16:58:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:39,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408440565] [2023-12-20 16:58:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408440565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:58:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134625974] [2023-12-20 16:58:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:39,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:58:39,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:58:39,374 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) [2023-12-20 16:58:39,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 16:58:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:39,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:58:39,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:58:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-20 16:58:39,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:58:39,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134625974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:39,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:58:39,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 16:58:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908092903] [2023-12-20 16:58:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:39,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:58:39,603 INFO L87 Difference]: Start difference. First operand 7455 states and 9961 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:42,962 INFO L93 Difference]: Finished difference Result 19655 states and 26990 transitions. [2023-12-20 16:58:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 16:58:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:43,021 INFO L225 Difference]: With dead ends: 19655 [2023-12-20 16:58:43,022 INFO L226 Difference]: Without dead ends: 12988 [2023-12-20 16:58:43,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:58:43,035 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:43,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1220 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 16:58:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2023-12-20 16:58:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 12971. [2023-12-20 16:58:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.235929067077872) internal successors, (16030), 12970 states have internal predecessors, (16030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16030 transitions. [2023-12-20 16:58:43,250 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16030 transitions. Word has length 145 [2023-12-20 16:58:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:43,250 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16030 transitions. [2023-12-20 16:58:43,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:43,251 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16030 transitions. [2023-12-20 16:58:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-20 16:58:43,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:43,253 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:58:43,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 16:58:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-20 16:58:43,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:43,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash -38162631, now seen corresponding path program 1 times [2023-12-20 16:58:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327392698] [2023-12-20 16:58:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:43,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 16:58:43,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:43,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327392698] [2023-12-20 16:58:43,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327392698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:43,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:43,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509396698] [2023-12-20 16:58:43,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:43,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:43,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:43,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:43,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:43,853 INFO L87 Difference]: Start difference. First operand 12971 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:46,185 INFO L93 Difference]: Finished difference Result 22791 states and 28650 transitions. [2023-12-20 16:58:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:46,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 232 [2023-12-20 16:58:46,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:46,229 INFO L225 Difference]: With dead ends: 22791 [2023-12-20 16:58:46,230 INFO L226 Difference]: Without dead ends: 12979 [2023-12-20 16:58:46,239 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 [2023-12-20 16:58:46,268 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:46,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 16:58:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12979 states. [2023-12-20 16:58:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12979 to 12971. [2023-12-20 16:58:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12971 states, 12970 states have (on average 1.2347725520431765) internal successors, (16015), 12970 states have internal predecessors, (16015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16015 transitions. [2023-12-20 16:58:46,509 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16015 transitions. Word has length 232 [2023-12-20 16:58:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:46,509 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16015 transitions. [2023-12-20 16:58:46,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16015 transitions. [2023-12-20 16:58:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-20 16:58:46,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:46,512 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:58:46,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 16:58:46,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:46,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1490533281, now seen corresponding path program 1 times [2023-12-20 16:58:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:46,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172868285] [2023-12-20 16:58:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:58:46,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:46,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172868285] [2023-12-20 16:58:46,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172868285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:46,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:46,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774454642] [2023-12-20 16:58:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:46,606 INFO L87 Difference]: Start difference. First operand 12971 states and 16015 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) [2023-12-20 16:58:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:49,476 INFO L93 Difference]: Finished difference Result 36165 states and 45133 transitions. [2023-12-20 16:58:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:49,484 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 234 [2023-12-20 16:58:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:49,536 INFO L225 Difference]: With dead ends: 36165 [2023-12-20 16:58:49,537 INFO L226 Difference]: Without dead ends: 23195 [2023-12-20 16:58:49,552 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 [2023-12-20 16:58:49,554 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 842 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:49,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1985 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:58:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23195 states. [2023-12-20 16:58:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23195 to 23190. [2023-12-20 16:58:49,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23190 states, 23189 states have (on average 1.1870283323989823) internal successors, (27526), 23189 states have internal predecessors, (27526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 27526 transitions. [2023-12-20 16:58:49,827 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 27526 transitions. Word has length 234 [2023-12-20 16:58:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:49,828 INFO L495 AbstractCegarLoop]: Abstraction has 23190 states and 27526 transitions. [2023-12-20 16:58:49,828 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) [2023-12-20 16:58:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 27526 transitions. [2023-12-20 16:58:49,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-20 16:58:49,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:49,830 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:49,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 16:58:49,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:49,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash 198601295, now seen corresponding path program 1 times [2023-12-20 16:58:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:49,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061322963] [2023-12-20 16:58:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:49,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 16:58:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061322963] [2023-12-20 16:58:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061322963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:49,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:49,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123955938] [2023-12-20 16:58:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:49,948 INFO L87 Difference]: Start difference. First operand 23190 states and 27526 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:52,821 INFO L93 Difference]: Finished difference Result 56619 states and 68543 transitions. [2023-12-20 16:58:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:52,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 256 [2023-12-20 16:58:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:52,859 INFO L225 Difference]: With dead ends: 56619 [2023-12-20 16:58:52,859 INFO L226 Difference]: Without dead ends: 34217 [2023-12-20 16:58:52,880 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 [2023-12-20 16:58:52,881 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 881 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:52,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 926 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:58:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34217 states. [2023-12-20 16:58:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34217 to 33422. [2023-12-20 16:58:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33422 states, 33421 states have (on average 1.1722569641841956) internal successors, (39178), 33421 states have internal predecessors, (39178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33422 states to 33422 states and 39178 transitions. [2023-12-20 16:58:53,531 INFO L78 Accepts]: Start accepts. Automaton has 33422 states and 39178 transitions. Word has length 256 [2023-12-20 16:58:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:53,533 INFO L495 AbstractCegarLoop]: Abstraction has 33422 states and 39178 transitions. [2023-12-20 16:58:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 33422 states and 39178 transitions. [2023-12-20 16:58:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-20 16:58:53,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:53,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 16:58:53,537 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:53,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1803285861, now seen corresponding path program 1 times [2023-12-20 16:58:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:53,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699907561] [2023-12-20 16:58:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 16:58:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699907561] [2023-12-20 16:58:53,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699907561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:53,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:53,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622491646] [2023-12-20 16:58:53,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:53,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:58:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:58:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:58:53,695 INFO L87 Difference]: Start difference. First operand 33422 states and 39178 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:59,679 INFO L93 Difference]: Finished difference Result 118209 states and 138561 transitions. [2023-12-20 16:58:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:58:59,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 308 [2023-12-20 16:58:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:59,775 INFO L225 Difference]: With dead ends: 118209 [2023-12-20 16:58:59,775 INFO L226 Difference]: Without dead ends: 85575 [2023-12-20 16:58:59,804 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 [2023-12-20 16:58:59,805 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1699 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6260 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 7254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 6260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:59,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1062 Invalid, 7254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [994 Valid, 6260 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 16:58:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85575 states. [2023-12-20 16:59:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85575 to 82305. [2023-12-20 16:59:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82305 states, 82304 states have (on average 1.1536741835147746) internal successors, (94952), 82304 states have internal predecessors, (94952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82305 states to 82305 states and 94952 transitions. [2023-12-20 16:59:00,740 INFO L78 Accepts]: Start accepts. Automaton has 82305 states and 94952 transitions. Word has length 308 [2023-12-20 16:59:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:00,740 INFO L495 AbstractCegarLoop]: Abstraction has 82305 states and 94952 transitions. [2023-12-20 16:59:00,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 82305 states and 94952 transitions. [2023-12-20 16:59:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-20 16:59:00,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:00,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:59:00,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 16:59:00,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:00,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash 428194920, now seen corresponding path program 1 times [2023-12-20 16:59:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067707228] [2023-12-20 16:59:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:00,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 166 proven. 113 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 16:59:01,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067707228] [2023-12-20 16:59:01,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067707228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:59:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668416049] [2023-12-20 16:59:01,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:01,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:01,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:59:01,958 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) [2023-12-20 16:59:01,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 16:59:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:02,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:59:02,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:59:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 16:59:02,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:59:02,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668416049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:02,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:59:02,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 16:59:02,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151849685] [2023-12-20 16:59:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:02,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:59:02,156 INFO L87 Difference]: Start difference. First operand 82305 states and 94952 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:04,990 INFO L93 Difference]: Finished difference Result 163811 states and 189101 transitions. [2023-12-20 16:59:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:04,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 326 [2023-12-20 16:59:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:05,102 INFO L225 Difference]: With dead ends: 163811 [2023-12-20 16:59:05,103 INFO L226 Difference]: Without dead ends: 82294 [2023-12-20 16:59:05,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:59:05,174 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1072 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:05,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 814 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:59:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82294 states. [2023-12-20 16:59:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82294 to 82291. [2023-12-20 16:59:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82291 states, 82290 states have (on average 1.1159071576133188) internal successors, (91828), 82290 states have internal predecessors, (91828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82291 states to 82291 states and 91828 transitions. [2023-12-20 16:59:06,292 INFO L78 Accepts]: Start accepts. Automaton has 82291 states and 91828 transitions. Word has length 326 [2023-12-20 16:59:06,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:06,293 INFO L495 AbstractCegarLoop]: Abstraction has 82291 states and 91828 transitions. [2023-12-20 16:59:06,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 82291 states and 91828 transitions. [2023-12-20 16:59:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-12-20 16:59:06,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:06,297 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 16:59:06,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 16:59:06,502 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,SelfDestructingSolverStorable10 [2023-12-20 16:59:06,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:06,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1080448050, now seen corresponding path program 1 times [2023-12-20 16:59:06,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:06,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953661223] [2023-12-20 16:59:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:06,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 260 proven. 113 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 16:59:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953661223] [2023-12-20 16:59:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953661223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:59:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391090528] [2023-12-20 16:59:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:07,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:59:07,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 16:59:07,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 16:59:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:07,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:59:07,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:59:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-20 16:59:08,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:59:08,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391090528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:08,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:59:08,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 16:59:08,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704229573] [2023-12-20 16:59:08,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:08,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:08,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:08,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:59:08,059 INFO L87 Difference]: Start difference. First operand 82291 states and 91828 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:10,868 INFO L93 Difference]: Finished difference Result 163792 states and 182862 transitions. [2023-12-20 16:59:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 375 [2023-12-20 16:59:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:10,971 INFO L225 Difference]: With dead ends: 163792 [2023-12-20 16:59:10,971 INFO L226 Difference]: Without dead ends: 82289 [2023-12-20 16:59:11,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 16:59:11,005 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1084 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:11,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1421 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:59:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82289 states. [2023-12-20 16:59:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82289 to 82288. [2023-12-20 16:59:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82288 states, 82287 states have (on average 1.088628823507966) internal successors, (89580), 82287 states have internal predecessors, (89580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82288 states to 82288 states and 89580 transitions. [2023-12-20 16:59:11,956 INFO L78 Accepts]: Start accepts. Automaton has 82288 states and 89580 transitions. Word has length 375 [2023-12-20 16:59:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:11,957 INFO L495 AbstractCegarLoop]: Abstraction has 82288 states and 89580 transitions. [2023-12-20 16:59:11,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 82288 states and 89580 transitions. [2023-12-20 16:59:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-12-20 16:59:11,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:11,961 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:11,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 16:59:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:12,166 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:12,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1472205223, now seen corresponding path program 1 times [2023-12-20 16:59:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:12,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430586884] [2023-12-20 16:59:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:12,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-20 16:59:12,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:12,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430586884] [2023-12-20 16:59:12,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430586884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:12,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:12,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:12,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513010033] [2023-12-20 16:59:12,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:12,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:12,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:12,492 INFO L87 Difference]: Start difference. First operand 82288 states and 89580 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:15,731 INFO L93 Difference]: Finished difference Result 189766 states and 208221 transitions. [2023-12-20 16:59:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:15,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 376 [2023-12-20 16:59:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:15,873 INFO L225 Difference]: With dead ends: 189766 [2023-12-20 16:59:15,873 INFO L226 Difference]: Without dead ends: 108266 [2023-12-20 16:59:15,906 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 [2023-12-20 16:59:15,907 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 883 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:15,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 902 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:59:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108266 states. [2023-12-20 16:59:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108266 to 106673. [2023-12-20 16:59:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106673 states, 106672 states have (on average 1.0921141442927853) internal successors, (116498), 106672 states have internal predecessors, (116498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106673 states to 106673 states and 116498 transitions. [2023-12-20 16:59:17,270 INFO L78 Accepts]: Start accepts. Automaton has 106673 states and 116498 transitions. Word has length 376 [2023-12-20 16:59:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:17,272 INFO L495 AbstractCegarLoop]: Abstraction has 106673 states and 116498 transitions. [2023-12-20 16:59:17,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 106673 states and 116498 transitions. [2023-12-20 16:59:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-20 16:59:17,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:17,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:17,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 16:59:17,291 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:17,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1774132873, now seen corresponding path program 1 times [2023-12-20 16:59:17,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:17,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535740443] [2023-12-20 16:59:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 246 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 16:59:18,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:18,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535740443] [2023-12-20 16:59:18,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535740443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:59:18,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401422813] [2023-12-20 16:59:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:18,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:18,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:59:18,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 16:59:18,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 16:59:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:18,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 16:59:18,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:59:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-12-20 16:59:18,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:59:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401422813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:18,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:59:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 16:59:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489008206] [2023-12-20 16:59:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:18,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:18,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:59:18,727 INFO L87 Difference]: Start difference. First operand 106673 states and 116498 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:21,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:21,656 INFO L93 Difference]: Finished difference Result 206270 states and 225610 transitions. [2023-12-20 16:59:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:21,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 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 409 [2023-12-20 16:59:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:21,808 INFO L225 Difference]: With dead ends: 206270 [2023-12-20 16:59:21,808 INFO L226 Difference]: Without dead ends: 110618 [2023-12-20 16:59:21,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:59:21,856 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 643 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:21,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1165 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 16:59:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110618 states. [2023-12-20 16:59:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110618 to 109034. [2023-12-20 16:59:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109034 states, 109033 states have (on average 1.0828373061366743) internal successors, (118065), 109033 states have internal predecessors, (118065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109034 states to 109034 states and 118065 transitions. [2023-12-20 16:59:23,395 INFO L78 Accepts]: Start accepts. Automaton has 109034 states and 118065 transitions. Word has length 409 [2023-12-20 16:59:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:23,408 INFO L495 AbstractCegarLoop]: Abstraction has 109034 states and 118065 transitions. [2023-12-20 16:59:23,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 109034 states and 118065 transitions. [2023-12-20 16:59:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-20 16:59:23,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:23,414 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:23,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 16:59:23,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:23,619 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:23,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1819478206, now seen corresponding path program 1 times [2023-12-20 16:59:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928539216] [2023-12-20 16:59:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:23,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 16:59:23,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:23,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928539216] [2023-12-20 16:59:23,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928539216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:23,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:23,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:23,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684782878] [2023-12-20 16:59:23,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:23,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:23,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:23,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:23,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:23,826 INFO L87 Difference]: Start difference. First operand 109034 states and 118065 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:27,461 INFO L93 Difference]: Finished difference Result 242479 states and 264082 transitions. [2023-12-20 16:59:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:27,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 468 [2023-12-20 16:59:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:27,624 INFO L225 Difference]: With dead ends: 242479 [2023-12-20 16:59:27,624 INFO L226 Difference]: Without dead ends: 132659 [2023-12-20 16:59:27,679 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 [2023-12-20 16:59:27,679 INFO L413 NwaCegarLoop]: 1751 mSDtfsCounter, 721 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:27,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1894 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 16:59:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132659 states. [2023-12-20 16:59:29,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132659 to 131069. [2023-12-20 16:59:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131069 states, 131068 states have (on average 1.0732062746055482) internal successors, (140663), 131068 states have internal predecessors, (140663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131069 states to 131069 states and 140663 transitions. [2023-12-20 16:59:29,321 INFO L78 Accepts]: Start accepts. Automaton has 131069 states and 140663 transitions. Word has length 468 [2023-12-20 16:59:29,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:29,321 INFO L495 AbstractCegarLoop]: Abstraction has 131069 states and 140663 transitions. [2023-12-20 16:59:29,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand 131069 states and 140663 transitions. [2023-12-20 16:59:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-20 16:59:29,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:29,332 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:29,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 16:59:29,333 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:29,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1671486359, now seen corresponding path program 1 times [2023-12-20 16:59:29,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:29,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710884082] [2023-12-20 16:59:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 709 proven. 75 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-20 16:59:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710884082] [2023-12-20 16:59:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710884082] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:59:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776431337] [2023-12-20 16:59:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:30,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:30,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:59:30,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 16:59:30,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 16:59:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:30,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 16:59:30,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:59:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-20 16:59:30,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:59:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776431337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:30,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:59:30,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-20 16:59:30,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213728040] [2023-12-20 16:59:30,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:59:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:59:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 16:59:30,970 INFO L87 Difference]: Start difference. First operand 131069 states and 140663 transitions. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:34,346 INFO L93 Difference]: Finished difference Result 248758 states and 267807 transitions. [2023-12-20 16:59:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:59:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 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 542 [2023-12-20 16:59:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:34,524 INFO L225 Difference]: With dead ends: 248758 [2023-12-20 16:59:34,524 INFO L226 Difference]: Without dead ends: 133436 [2023-12-20 16:59:34,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 16:59:34,599 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 2538 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2538 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:34,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2538 Valid, 823 Invalid, 3788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:59:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133436 states. [2023-12-20 16:59:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133436 to 131852. [2023-12-20 16:59:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131852 states, 131851 states have (on average 1.0726350198329933) internal successors, (141428), 131851 states have internal predecessors, (141428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131852 states to 131852 states and 141428 transitions. [2023-12-20 16:59:36,158 INFO L78 Accepts]: Start accepts. Automaton has 131852 states and 141428 transitions. Word has length 542 [2023-12-20 16:59:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:36,159 INFO L495 AbstractCegarLoop]: Abstraction has 131852 states and 141428 transitions. [2023-12-20 16:59:36,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 131852 states and 141428 transitions. [2023-12-20 16:59:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2023-12-20 16:59:36,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:36,185 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:36,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 16:59:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-20 16:59:36,391 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:36,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1791000243, now seen corresponding path program 1 times [2023-12-20 16:59:36,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:36,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339232658] [2023-12-20 16:59:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:36,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-12-20 16:59:37,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339232658] [2023-12-20 16:59:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339232658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:37,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:37,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147572568] [2023-12-20 16:59:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:37,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:37,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:37,127 INFO L87 Difference]: Start difference. First operand 131852 states and 141428 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:41,011 INFO L93 Difference]: Finished difference Result 299142 states and 322737 transitions. [2023-12-20 16:59:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 600 [2023-12-20 16:59:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:41,374 INFO L225 Difference]: With dead ends: 299142 [2023-12-20 16:59:41,374 INFO L226 Difference]: Without dead ends: 179880 [2023-12-20 16:59:41,399 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 [2023-12-20 16:59:41,399 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 916 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:41,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 854 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 16:59:41,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179880 states. [2023-12-20 16:59:43,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179880 to 148375. [2023-12-20 16:59:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148375 states, 148374 states have (on average 1.0655236092576867) internal successors, (158096), 148374 states have internal predecessors, (158096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148375 states to 148375 states and 158096 transitions. [2023-12-20 16:59:43,339 INFO L78 Accepts]: Start accepts. Automaton has 148375 states and 158096 transitions. Word has length 600 [2023-12-20 16:59:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:43,340 INFO L495 AbstractCegarLoop]: Abstraction has 148375 states and 158096 transitions. [2023-12-20 16:59:43,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 148375 states and 158096 transitions. [2023-12-20 16:59:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-12-20 16:59:43,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:43,358 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 16:59:43,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 16:59:43,358 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:43,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1754944945, now seen corresponding path program 1 times [2023-12-20 16:59:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168494733] [2023-12-20 16:59:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-20 16:59:43,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:43,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168494733] [2023-12-20 16:59:43,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168494733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:43,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:43,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:43,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293072748] [2023-12-20 16:59:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:43,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:43,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:43,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:43,837 INFO L87 Difference]: Start difference. First operand 148375 states and 158096 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:47,648 INFO L93 Difference]: Finished difference Result 327471 states and 351176 transitions. [2023-12-20 16:59:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:47,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 606 [2023-12-20 16:59:47,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:47,953 INFO L225 Difference]: With dead ends: 327471 [2023-12-20 16:59:47,953 INFO L226 Difference]: Without dead ends: 194843 [2023-12-20 16:59:48,072 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 [2023-12-20 16:59:48,073 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1023 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:48,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 609 Invalid, 3262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 16:59:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194843 states. [2023-12-20 16:59:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194843 to 194839. [2023-12-20 16:59:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194839 states, 194838 states have (on average 1.0665065336330695) internal successors, (207796), 194838 states have internal predecessors, (207796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194839 states to 194839 states and 207796 transitions. [2023-12-20 16:59:50,882 INFO L78 Accepts]: Start accepts. Automaton has 194839 states and 207796 transitions. Word has length 606 [2023-12-20 16:59:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:50,883 INFO L495 AbstractCegarLoop]: Abstraction has 194839 states and 207796 transitions. [2023-12-20 16:59:50,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 194839 states and 207796 transitions. [2023-12-20 16:59:50,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2023-12-20 16:59:50,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:50,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-20 16:59:50,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 16:59:50,909 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:50,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash -928375387, now seen corresponding path program 1 times [2023-12-20 16:59:50,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:50,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717709228] [2023-12-20 16:59:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:50,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 795 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-20 16:59:51,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:51,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717709228] [2023-12-20 16:59:51,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717709228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:51,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:51,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:51,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651189612] [2023-12-20 16:59:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:51,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:51,395 INFO L87 Difference]: Start difference. First operand 194839 states and 207796 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:54,889 INFO L93 Difference]: Finished difference Result 388897 states and 414785 transitions. [2023-12-20 16:59:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:54,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 644 [2023-12-20 16:59:54,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:55,180 INFO L225 Difference]: With dead ends: 388897 [2023-12-20 16:59:55,181 INFO L226 Difference]: Without dead ends: 194846 [2023-12-20 16:59:55,268 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 [2023-12-20 16:59:55,268 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 932 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:55,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1414 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:59:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194846 states. [2023-12-20 16:59:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194846 to 193258. [2023-12-20 16:59:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193258 states, 193257 states have (on average 1.0511339822102175) internal successors, (203139), 193257 states have internal predecessors, (203139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193258 states to 193258 states and 203139 transitions. [2023-12-20 16:59:57,841 INFO L78 Accepts]: Start accepts. Automaton has 193258 states and 203139 transitions. Word has length 644 [2023-12-20 16:59:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:57,842 INFO L495 AbstractCegarLoop]: Abstraction has 193258 states and 203139 transitions. [2023-12-20 16:59:57,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand 193258 states and 203139 transitions. [2023-12-20 16:59:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-12-20 16:59:57,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:57,860 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:57,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 16:59:57,860 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:57,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1449462097, now seen corresponding path program 1 times [2023-12-20 16:59:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330561248] [2023-12-20 16:59:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 675 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-12-20 16:59:58,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:58,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330561248] [2023-12-20 16:59:58,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330561248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:58,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:58,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223073112] [2023-12-20 16:59:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:58,338 INFO L87 Difference]: Start difference. First operand 193258 states and 203139 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:01,678 INFO L93 Difference]: Finished difference Result 372349 states and 391809 transitions. [2023-12-20 17:00:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:01,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 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 655 [2023-12-20 17:00:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:01,995 INFO L225 Difference]: With dead ends: 372349 [2023-12-20 17:00:01,995 INFO L226 Difference]: Without dead ends: 194051 [2023-12-20 17:00:02,149 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 [2023-12-20 17:00:02,151 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 722 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:02,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1835 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:00:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194051 states. [2023-12-20 17:00:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194051 to 194046. [2023-12-20 17:00:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194046 states, 194045 states have (on average 1.0510963951660697) internal successors, (203960), 194045 states have internal predecessors, (203960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194046 states to 194046 states and 203960 transitions. [2023-12-20 17:00:04,374 INFO L78 Accepts]: Start accepts. Automaton has 194046 states and 203960 transitions. Word has length 655 [2023-12-20 17:00:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:04,375 INFO L495 AbstractCegarLoop]: Abstraction has 194046 states and 203960 transitions. [2023-12-20 17:00:04,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 194046 states and 203960 transitions. [2023-12-20 17:00:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-12-20 17:00:04,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:04,405 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:00:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:00:04,405 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:04,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1394019398, now seen corresponding path program 1 times [2023-12-20 17:00:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:04,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541324487] [2023-12-20 17:00:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2023-12-20 17:00:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541324487] [2023-12-20 17:00:05,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541324487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:05,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:05,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024456898] [2023-12-20 17:00:05,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:05,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:05,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:05,335 INFO L87 Difference]: Start difference. First operand 194046 states and 203960 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:08,561 INFO L93 Difference]: Finished difference Result 378619 states and 398517 transitions. [2023-12-20 17:00:08,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:08,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 685 [2023-12-20 17:00:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:08,950 INFO L225 Difference]: With dead ends: 378619 [2023-12-20 17:00:08,951 INFO L226 Difference]: Without dead ends: 199533 [2023-12-20 17:00:09,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:09,084 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 1044 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:09,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 347 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:00:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199533 states. [2023-12-20 17:00:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199533 to 199533. [2023-12-20 17:00:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199533 states, 199532 states have (on average 1.047410941603352) internal successors, (208992), 199532 states have internal predecessors, (208992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199533 states to 199533 states and 208992 transitions. [2023-12-20 17:00:11,859 INFO L78 Accepts]: Start accepts. Automaton has 199533 states and 208992 transitions. Word has length 685 [2023-12-20 17:00:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:11,859 INFO L495 AbstractCegarLoop]: Abstraction has 199533 states and 208992 transitions. [2023-12-20 17:00:11,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 199533 states and 208992 transitions. [2023-12-20 17:00:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2023-12-20 17:00:11,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:11,880 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:00:11,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:00:11,881 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:11,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash -798425799, now seen corresponding path program 1 times [2023-12-20 17:00:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165396386] [2023-12-20 17:00:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 1026 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-12-20 17:00:12,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:12,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165396386] [2023-12-20 17:00:12,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165396386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:12,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:12,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:12,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138113885] [2023-12-20 17:00:12,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:12,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:12,479 INFO L87 Difference]: Start difference. First operand 199533 states and 208992 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:15,708 INFO L93 Difference]: Finished difference Result 391195 states and 410014 transitions. [2023-12-20 17:00:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:15,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 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 757 [2023-12-20 17:00:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:16,022 INFO L225 Difference]: With dead ends: 391195 [2023-12-20 17:00:16,022 INFO L226 Difference]: Without dead ends: 206622 [2023-12-20 17:00:16,115 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 [2023-12-20 17:00:16,116 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 719 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:16,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1799 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:00:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206622 states. [2023-12-20 17:00:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206622 to 205829. [2023-12-20 17:00:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205829 states, 205828 states have (on average 1.0464951318576676) internal successors, (215398), 205828 states have internal predecessors, (215398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205829 states to 205829 states and 215398 transitions. [2023-12-20 17:00:19,065 INFO L78 Accepts]: Start accepts. Automaton has 205829 states and 215398 transitions. Word has length 757 [2023-12-20 17:00:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:19,065 INFO L495 AbstractCegarLoop]: Abstraction has 205829 states and 215398 transitions. [2023-12-20 17:00:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 205829 states and 215398 transitions. [2023-12-20 17:00:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-12-20 17:00:19,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:19,087 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:00:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:00:19,087 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:19,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1258771860, now seen corresponding path program 1 times [2023-12-20 17:00:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:19,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812822002] [2023-12-20 17:00:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-20 17:00:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812822002] [2023-12-20 17:00:20,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812822002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:20,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:20,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:20,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293888209] [2023-12-20 17:00:20,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:20,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:00:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:20,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:00:20,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:00:20,314 INFO L87 Difference]: Start difference. First operand 205829 states and 215398 transitions. Second operand has 4 states, 4 states have (on average 161.0) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:25,949 INFO L93 Difference]: Finished difference Result 466108 states and 487624 transitions. [2023-12-20 17:00:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:00:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 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 759 [2023-12-20 17:00:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:26,416 INFO L225 Difference]: With dead ends: 466108 [2023-12-20 17:00:26,426 INFO L226 Difference]: Without dead ends: 261067 [2023-12-20 17:00:26,804 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 [2023-12-20 17:00:26,807 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1647 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 5490 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 6158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 5490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:26,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 767 Invalid, 6158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 5490 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 17:00:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261067 states. [2023-12-20 17:00:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261067 to 248368. [2023-12-20 17:00:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248368 states, 248367 states have (on average 1.0468137876610017) internal successors, (259994), 248367 states have internal predecessors, (259994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248368 states to 248368 states and 259994 transitions. [2023-12-20 17:00:30,227 INFO L78 Accepts]: Start accepts. Automaton has 248368 states and 259994 transitions. Word has length 759 [2023-12-20 17:00:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:30,228 INFO L495 AbstractCegarLoop]: Abstraction has 248368 states and 259994 transitions. [2023-12-20 17:00:30,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 248368 states and 259994 transitions. [2023-12-20 17:00:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2023-12-20 17:00:30,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:30,251 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:00:30,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:00:30,251 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:30,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash 641105028, now seen corresponding path program 1 times [2023-12-20 17:00:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134416902] [2023-12-20 17:00:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 814 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-20 17:00:31,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:31,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134416902] [2023-12-20 17:00:31,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134416902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:31,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:31,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:31,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773207976] [2023-12-20 17:00:31,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:31,325 INFO L87 Difference]: Start difference. First operand 248368 states and 259994 transitions. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:34,420 INFO L93 Difference]: Finished difference Result 488079 states and 511324 transitions. [2023-12-20 17:00:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 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 919 [2023-12-20 17:00:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:34,943 INFO L225 Difference]: With dead ends: 488079 [2023-12-20 17:00:34,943 INFO L226 Difference]: Without dead ends: 252305 [2023-12-20 17:00:35,142 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 [2023-12-20 17:00:35,151 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 522 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:35,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1651 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:00:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252305 states. [2023-12-20 17:00:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252305 to 249940. [2023-12-20 17:00:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249940 states, 249939 states have (on average 1.0455791213055985) internal successors, (261331), 249939 states have internal predecessors, (261331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249940 states to 249940 states and 261331 transitions. [2023-12-20 17:00:38,252 INFO L78 Accepts]: Start accepts. Automaton has 249940 states and 261331 transitions. Word has length 919 [2023-12-20 17:00:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 249940 states and 261331 transitions. [2023-12-20 17:00:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 249940 states and 261331 transitions. [2023-12-20 17:00:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2023-12-20 17:00:38,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:38,277 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:00:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:00:38,278 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:38,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -173332148, now seen corresponding path program 1 times [2023-12-20 17:00:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926751594] [2023-12-20 17:00:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2023-12-20 17:00:38,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:38,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926751594] [2023-12-20 17:00:38,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926751594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:38,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:38,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:38,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724839868] [2023-12-20 17:00:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:38,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:38,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:38,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:38,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:38,838 INFO L87 Difference]: Start difference. First operand 249940 states and 261331 transitions. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:42,093 INFO L93 Difference]: Finished difference Result 502214 states and 525754 transitions. [2023-12-20 17:00:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:42,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 954 [2023-12-20 17:00:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:42,459 INFO L225 Difference]: With dead ends: 502214 [2023-12-20 17:00:42,459 INFO L226 Difference]: Without dead ends: 267234 [2023-12-20 17:00:42,575 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 [2023-12-20 17:00:42,576 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 922 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 3220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:42,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 498 Invalid, 3220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [966 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:00:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267234 states. [2023-12-20 17:00:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267234 to 236507. [2023-12-20 17:00:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236507 states, 236506 states have (on average 1.0430686747904916) internal successors, (246692), 236506 states have internal predecessors, (246692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236507 states to 236507 states and 246692 transitions. [2023-12-20 17:00:46,157 INFO L78 Accepts]: Start accepts. Automaton has 236507 states and 246692 transitions. Word has length 954 [2023-12-20 17:00:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:46,157 INFO L495 AbstractCegarLoop]: Abstraction has 236507 states and 246692 transitions. [2023-12-20 17:00:46,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 236507 states and 246692 transitions. [2023-12-20 17:00:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2023-12-20 17:00:46,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:46,189 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:00:46,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:00:46,189 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:46,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash -7434316, now seen corresponding path program 1 times [2023-12-20 17:00:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138869785] [2023-12-20 17:00:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 808 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-20 17:00:47,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138869785] [2023-12-20 17:00:47,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138869785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:47,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:47,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581927227] [2023-12-20 17:00:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:47,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:47,608 INFO L87 Difference]: Start difference. First operand 236507 states and 246692 transitions. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:00:51,715 INFO L93 Difference]: Finished difference Result 550243 states and 574208 transitions. [2023-12-20 17:00:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:00:51,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 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 1043 [2023-12-20 17:00:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:00:52,150 INFO L225 Difference]: With dead ends: 550243 [2023-12-20 17:00:52,150 INFO L226 Difference]: Without dead ends: 314524 [2023-12-20 17:00:52,554 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 [2023-12-20 17:00:52,554 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 487 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:00:52,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 709 Invalid, 3283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:00:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314524 states. [2023-12-20 17:00:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314524 to 310506. [2023-12-20 17:00:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310506 states, 310505 states have (on average 1.0397674755640005) internal successors, (322853), 310505 states have internal predecessors, (322853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310506 states to 310506 states and 322853 transitions. [2023-12-20 17:00:56,339 INFO L78 Accepts]: Start accepts. Automaton has 310506 states and 322853 transitions. Word has length 1043 [2023-12-20 17:00:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 310506 states and 322853 transitions. [2023-12-20 17:00:56,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 310506 states and 322853 transitions. [2023-12-20 17:00:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2023-12-20 17:00:56,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:56,370 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:00:56,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:00:56,370 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:56,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 394272457, now seen corresponding path program 1 times [2023-12-20 17:00:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:56,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338450523] [2023-12-20 17:00:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 559 proven. 448 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-20 17:00:57,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:57,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338450523] [2023-12-20 17:00:57,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338450523] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:00:57,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106179417] [2023-12-20 17:00:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:57,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:00:57,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:00:57,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:00:57,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:00:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:58,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:00:58,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:00:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 276 proven. 750 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-20 17:00:59,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:01:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 1026 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-20 17:01:00,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106179417] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:01:00,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:01:00,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 8 [2023-12-20 17:01:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539386354] [2023-12-20 17:01:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:01:00,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:01:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:01:00,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:01:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:01:00,167 INFO L87 Difference]: Start difference. First operand 310506 states and 322853 transitions. Second operand has 5 states, 5 states have (on average 190.4) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:01:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:01:07,176 INFO L93 Difference]: Finished difference Result 683276 states and 712311 transitions. [2023-12-20 17:01:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:01:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 190.4) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 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 1051 [2023-12-20 17:01:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:01:07,698 INFO L225 Difference]: With dead ends: 683276 [2023-12-20 17:01:07,698 INFO L226 Difference]: Without dead ends: 383000 [2023-12-20 17:01:07,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2103 GetRequests, 2096 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:01:07,823 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 2148 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 2299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 6798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2299 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:01:07,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2148 Valid, 367 Invalid, 6798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2299 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 17:01:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383000 states. [2023-12-20 17:01:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383000 to 312128. [2023-12-20 17:01:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312128 states, 312127 states have (on average 1.041108266827285) internal successors, (324958), 312127 states have internal predecessors, (324958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:01:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312128 states to 312128 states and 324958 transitions. [2023-12-20 17:01:12,174 INFO L78 Accepts]: Start accepts. Automaton has 312128 states and 324958 transitions. Word has length 1051 [2023-12-20 17:01:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:01:12,174 INFO L495 AbstractCegarLoop]: Abstraction has 312128 states and 324958 transitions. [2023-12-20 17:01:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.4) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:01:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 312128 states and 324958 transitions. [2023-12-20 17:01:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2023-12-20 17:01:12,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:01:12,211 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:01:12,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 17:01:12,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 17:01:12,417 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:01:12,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:01:12,417 INFO L85 PathProgramCache]: Analyzing trace with hash -148131087, now seen corresponding path program 1 times [2023-12-20 17:01:12,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:01:12,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859403552] [2023-12-20 17:01:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:01:12,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:01:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:01:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 924 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-20 17:01:13,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:01:13,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859403552] [2023-12-20 17:01:13,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859403552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:01:13,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:01:13,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:01:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799088879] [2023-12-20 17:01:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:01:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:01:13,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:01:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:01:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:01:13,972 INFO L87 Difference]: Start difference. First operand 312128 states and 324958 transitions. Second operand has 4 states, 4 states have (on average 232.25) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:01:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:01:20,253 INFO L93 Difference]: Finished difference Result 691328 states and 719972 transitions. [2023-12-20 17:01:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:01:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 232.25) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1116 [2023-12-20 17:01:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:01:21,313 INFO L225 Difference]: With dead ends: 691328 [2023-12-20 17:01:21,313 INFO L226 Difference]: Without dead ends: 379988 [2023-12-20 17:01:21,545 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 [2023-12-20 17:01:21,546 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1356 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 5613 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 6480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 5613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:01:21,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 745 Invalid, 6480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 5613 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time]