/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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:03:02,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:03:02,692 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 17:03:02,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:03:02,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:03:02,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:03:02,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:03:02,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:03:02,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:03:02,712 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:03:02,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:03:02,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:03:02,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:03:02,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:03:02,713 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:03:02,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:03:02,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:03:02,714 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:03:02,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:03:02,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:03:02,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:03:02,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:03:02,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:03:02,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:03:02,727 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:03:02,727 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:03:02,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:03:02,728 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:03:02,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:03:02,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:03:02,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:03:02,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:03:02,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:03:02,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:03:02,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:03:02,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:03:02,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:03:02,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:03:02,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:03:02,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:03:02,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:03:02,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:03:02,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:03:02,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:03:02,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:03:02,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:03:02,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:03:02,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:03:02,920 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:03:02,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2023-12-20 17:03:03,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:03:04,210 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:03:04,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2023-12-20 17:03:04,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3fe1419/93c41d83d0cf4e0ab87453e36f7f5e09/FLAGad5b4f4b2 [2023-12-20 17:03:04,255 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3fe1419/93c41d83d0cf4e0ab87453e36f7f5e09 [2023-12-20 17:03:04,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:03:04,258 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:03:04,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:03:04,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:03:04,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:03:04,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:03:04" (1/1) ... [2023-12-20 17:03:04,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51decc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:04, skipping insertion in model container [2023-12-20 17:03:04,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:03:04" (1/1) ... [2023-12-20 17:03:04,418 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:03:04,582 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_label25.c[3529,3542] [2023-12-20 17:03:05,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:03:05,249 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:03:05,273 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_label25.c[3529,3542] [2023-12-20 17:03:05,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:03:05,624 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:03:05,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05 WrapperNode [2023-12-20 17:03:05,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:03:05,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:03:05,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:03:05,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:03:05,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:05,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,125 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 17:03:06,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:03:06,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:03:06,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:03:06,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:03:06,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,396 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 17:03:06,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:03:06,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:03:06,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:03:06,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:03:06,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (1/1) ... [2023-12-20 17:03:06,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:03:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:03:06,732 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 17:03:06,752 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 17:03:06,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:03:06,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:03:06,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:03:06,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:03:06,813 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:03:06,815 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:03:10,631 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:03:10,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:03:10,668 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:03:10,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:03:10 BoogieIcfgContainer [2023-12-20 17:03:10,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:03:10,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:03:10,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:03:10,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:03:10,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:03:04" (1/3) ... [2023-12-20 17:03:10,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758a7605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:03:10, skipping insertion in model container [2023-12-20 17:03:10,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:05" (2/3) ... [2023-12-20 17:03:10,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758a7605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:03:10, skipping insertion in model container [2023-12-20 17:03:10,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:03:10" (3/3) ... [2023-12-20 17:03:10,675 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label25.c [2023-12-20 17:03:10,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:03:10,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:03:10,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:03:10,736 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;@14dd768f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:03:10,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:03:10,743 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 17:03:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 17:03:10,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:10,748 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, 1, 1] [2023-12-20 17:03:10,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:10,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash -946252784, now seen corresponding path program 1 times [2023-12-20 17:03:10,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:10,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225139473] [2023-12-20 17:03:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:10,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:10,855 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 17:03:10,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225139473] [2023-12-20 17:03:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225139473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:10,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:10,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:10,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819478387] [2023-12-20 17:03:10,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:10,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:03:10,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:10,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:03:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:03:10,890 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:03:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:10,968 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 17:03:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:03:10,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-20 17:03:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:11,002 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 17:03:11,002 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 17:03:11,008 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 17:03:11,010 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 17:03:11,011 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 17:03:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 17:03:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 17:03:11,071 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 17:03:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 17:03:11,075 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 22 [2023-12-20 17:03:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:11,075 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 17:03:11,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:03:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 17:03:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 17:03:11,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:11,076 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, 1, 1] [2023-12-20 17:03:11,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:03:11,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:11,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1388468584, now seen corresponding path program 1 times [2023-12-20 17:03:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:11,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831117984] [2023-12-20 17:03:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:11,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:11,182 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 17:03:11,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831117984] [2023-12-20 17:03:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831117984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:11,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:11,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:11,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250535959] [2023-12-20 17:03:11,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:11,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:11,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:11,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:11,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:11,185 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:03:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:14,675 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2023-12-20 17:03:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-20 17:03:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:14,685 INFO L225 Difference]: With dead ends: 2931 [2023-12-20 17:03:14,685 INFO L226 Difference]: Without dead ends: 1898 [2023-12-20 17:03:14,687 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 17:03:14,689 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 992 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 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, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:14,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 594 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 17:03:14,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-20 17:03:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2023-12-20 17:03:14,735 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 17:03:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2023-12-20 17:03:14,740 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 22 [2023-12-20 17:03:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:14,740 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2023-12-20 17:03:14,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:03:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2023-12-20 17:03:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 17:03:14,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:14,745 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:03:14,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:03:14,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:14,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -628504205, now seen corresponding path program 1 times [2023-12-20 17:03:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658130907] [2023-12-20 17:03:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658130907] [2023-12-20 17:03:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658130907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:14,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:14,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422188503] [2023-12-20 17:03:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:14,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:14,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:14,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:14,943 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 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 17:03:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:17,953 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2023-12-20 17:03:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:17,954 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 17:03:17,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:17,965 INFO L225 Difference]: With dead ends: 5383 [2023-12-20 17:03:17,966 INFO L226 Difference]: Without dead ends: 3491 [2023-12-20 17:03:17,968 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 17:03:17,969 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:17,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:03:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-20 17:03:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2023-12-20 17:03:18,013 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 17:03:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2023-12-20 17:03:18,020 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 87 [2023-12-20 17:03:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:18,020 INFO L495 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2023-12-20 17:03:18,020 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 17:03:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2023-12-20 17:03:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 17:03:18,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:18,022 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:03:18,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:03:18,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:18,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:18,022 INFO L85 PathProgramCache]: Analyzing trace with hash 556973592, now seen corresponding path program 1 times [2023-12-20 17:03:18,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:18,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777461285] [2023-12-20 17:03:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:18,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:18,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777461285] [2023-12-20 17:03:18,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777461285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:18,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:18,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608285008] [2023-12-20 17:03:18,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:18,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:18,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:18,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:18,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:18,137 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:20,999 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2023-12-20 17:03:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:20,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-20 17:03:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:21,018 INFO L225 Difference]: With dead ends: 10168 [2023-12-20 17:03:21,018 INFO L226 Difference]: Without dead ends: 6679 [2023-12-20 17:03:21,024 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 17:03:21,025 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:21,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:03:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2023-12-20 17:03:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2023-12-20 17:03:21,112 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 17:03:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2023-12-20 17:03:21,125 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 89 [2023-12-20 17:03:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:21,125 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2023-12-20 17:03:21,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2023-12-20 17:03:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 17:03:21,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:21,134 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:03:21,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:03:21,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:21,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1115994662, now seen corresponding path program 1 times [2023-12-20 17:03:21,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:21,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595166757] [2023-12-20 17:03:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:21,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:21,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:21,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595166757] [2023-12-20 17:03:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595166757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218529978] [2023-12-20 17:03:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:21,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:21,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:21,468 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:23,988 INFO L93 Difference]: Finished difference Result 14122 states and 19184 transitions. [2023-12-20 17:03:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:23,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-20 17:03:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:24,017 INFO L225 Difference]: With dead ends: 14122 [2023-12-20 17:03:24,017 INFO L226 Difference]: Without dead ends: 7455 [2023-12-20 17:03:24,025 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 17:03:24,026 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:24,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1213 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:03:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2023-12-20 17:03:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2023-12-20 17:03:24,117 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 17:03:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2023-12-20 17:03:24,129 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 133 [2023-12-20 17:03:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:24,130 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2023-12-20 17:03:24,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2023-12-20 17:03:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-20 17:03:24,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:24,131 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:03:24,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:03:24,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:24,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -708865520, now seen corresponding path program 1 times [2023-12-20 17:03:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:24,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355154533] [2023-12-20 17:03:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:24,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 17:03:24,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355154533] [2023-12-20 17:03:24,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355154533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:24,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:24,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339186995] [2023-12-20 17:03:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:24,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:24,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:24,266 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 17:03:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:27,149 INFO L93 Difference]: Finished difference Result 19655 states and 26990 transitions. [2023-12-20 17:03:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:27,159 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 147 [2023-12-20 17:03:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:27,194 INFO L225 Difference]: With dead ends: 19655 [2023-12-20 17:03:27,194 INFO L226 Difference]: Without dead ends: 12988 [2023-12-20 17:03:27,205 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 17:03:27,208 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:27,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1220 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:03:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2023-12-20 17:03:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 12971. [2023-12-20 17:03:27,387 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 17:03:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16030 transitions. [2023-12-20 17:03:27,411 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16030 transitions. Word has length 147 [2023-12-20 17:03:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:27,411 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16030 transitions. [2023-12-20 17:03:27,412 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 17:03:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16030 transitions. [2023-12-20 17:03:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-20 17:03:27,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:27,414 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 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 17:03:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:03:27,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:27,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1049820961, now seen corresponding path program 1 times [2023-12-20 17:03:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:27,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089544815] [2023-12-20 17:03:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:27,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 17:03:27,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:27,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089544815] [2023-12-20 17:03:27,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089544815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:27,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:27,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:27,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188335718] [2023-12-20 17:03:27,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:27,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:27,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:27,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:27,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:27,768 INFO L87 Difference]: Start difference. First operand 12971 states and 16030 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 17:03:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:30,382 INFO L93 Difference]: Finished difference Result 22791 states and 28650 transitions. [2023-12-20 17:03:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:30,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 17:03:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:30,406 INFO L225 Difference]: With dead ends: 22791 [2023-12-20 17:03:30,406 INFO L226 Difference]: Without dead ends: 12979 [2023-12-20 17:03:30,417 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 17:03:30,418 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:30,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:03:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12979 states. [2023-12-20 17:03:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12979 to 12971. [2023-12-20 17:03:30,551 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 17:03:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 16015 transitions. [2023-12-20 17:03:30,567 INFO L78 Accepts]: Start accepts. Automaton has 12971 states and 16015 transitions. Word has length 234 [2023-12-20 17:03:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:30,567 INFO L495 AbstractCegarLoop]: Abstraction has 12971 states and 16015 transitions. [2023-12-20 17:03:30,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 17:03:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12971 states and 16015 transitions. [2023-12-20 17:03:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 17:03:30,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:30,569 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:30,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:03:30,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:30,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 713172743, now seen corresponding path program 1 times [2023-12-20 17:03:30,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:30,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95632042] [2023-12-20 17:03:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:30,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:30,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95632042] [2023-12-20 17:03:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95632042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:30,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:30,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:03:30,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252640020] [2023-12-20 17:03:30,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:30,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:30,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:30,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:30,672 INFO L87 Difference]: Start difference. First operand 12971 states and 16015 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 17:03:33,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:33,731 INFO L93 Difference]: Finished difference Result 36165 states and 45133 transitions. [2023-12-20 17:03:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:33,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 17:03:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:33,760 INFO L225 Difference]: With dead ends: 36165 [2023-12-20 17:03:33,760 INFO L226 Difference]: Without dead ends: 23195 [2023-12-20 17:03:33,767 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 17:03:33,769 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 841 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:33,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1986 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:03:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23195 states. [2023-12-20 17:03:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23195 to 22403. [2023-12-20 17:03:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22403 states, 22402 states have (on average 1.1931970359789303) internal successors, (26730), 22402 states have internal predecessors, (26730), 0 states have call successors, (0), 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 17:03:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22403 states to 22403 states and 26730 transitions. [2023-12-20 17:03:33,986 INFO L78 Accepts]: Start accepts. Automaton has 22403 states and 26730 transitions. Word has length 236 [2023-12-20 17:03:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:33,987 INFO L495 AbstractCegarLoop]: Abstraction has 22403 states and 26730 transitions. [2023-12-20 17:03:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 17:03:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 22403 states and 26730 transitions. [2023-12-20 17:03:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-20 17:03:33,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:33,991 INFO L195 NwaCegarLoop]: trace histogram [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, 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 17:03:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:03:33,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:33,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1824389335, now seen corresponding path program 1 times [2023-12-20 17:03:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781177240] [2023-12-20 17:03:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 17:03:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781177240] [2023-12-20 17:03:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781177240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:34,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:34,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:03:34,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487121338] [2023-12-20 17:03:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:34,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:34,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:34,116 INFO L87 Difference]: Start difference. First operand 22403 states and 26730 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 17:03:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:37,082 INFO L93 Difference]: Finished difference Result 55045 states and 66947 transitions. [2023-12-20 17:03:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:37,083 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 258 [2023-12-20 17:03:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:37,134 INFO L225 Difference]: With dead ends: 55045 [2023-12-20 17:03:37,134 INFO L226 Difference]: Without dead ends: 33430 [2023-12-20 17:03:37,158 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 17:03:37,158 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 883 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 924 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 17:03:37,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 924 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:03:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33430 states. [2023-12-20 17:03:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33430 to 32634. [2023-12-20 17:03:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32634 states, 32633 states have (on average 1.176263291759875) internal successors, (38385), 32633 states have internal predecessors, (38385), 0 states have call successors, (0), 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 17:03:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32634 states to 32634 states and 38385 transitions. [2023-12-20 17:03:37,553 INFO L78 Accepts]: Start accepts. Automaton has 32634 states and 38385 transitions. Word has length 258 [2023-12-20 17:03:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:37,554 INFO L495 AbstractCegarLoop]: Abstraction has 32634 states and 38385 transitions. [2023-12-20 17:03:37,554 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 17:03:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 32634 states and 38385 transitions. [2023-12-20 17:03:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-20 17:03:37,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:37,557 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:37,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:03:37,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:37,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2116985419, now seen corresponding path program 1 times [2023-12-20 17:03:37,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:37,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811351647] [2023-12-20 17:03:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:37,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 41 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:38,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811351647] [2023-12-20 17:03:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811351647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:03:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835296165] [2023-12-20 17:03:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:03:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:03:38,722 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 17:03:38,726 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 17:03:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:38,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:03:38,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:03:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 17:03:38,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:03:38,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835296165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:38,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:03:38,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:03:38,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307543506] [2023-12-20 17:03:38,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:38,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:38,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:38,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:38,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:03:38,915 INFO L87 Difference]: Start difference. First operand 32634 states and 38385 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 17:03:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:41,701 INFO L93 Difference]: Finished difference Result 64478 states and 75976 transitions. [2023-12-20 17:03:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:41,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 263 [2023-12-20 17:03:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:41,745 INFO L225 Difference]: With dead ends: 64478 [2023-12-20 17:03:41,745 INFO L226 Difference]: Without dead ends: 32632 [2023-12-20 17:03:41,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 262 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 17:03:41,755 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1184 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:41,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1438 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:03:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32632 states. [2023-12-20 17:03:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32632 to 32631. [2023-12-20 17:03:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32631 states, 32630 states have (on average 1.136837266319338) internal successors, (37095), 32630 states have internal predecessors, (37095), 0 states have call successors, (0), 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 17:03:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32631 states to 32631 states and 37095 transitions. [2023-12-20 17:03:42,091 INFO L78 Accepts]: Start accepts. Automaton has 32631 states and 37095 transitions. Word has length 263 [2023-12-20 17:03:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:42,092 INFO L495 AbstractCegarLoop]: Abstraction has 32631 states and 37095 transitions. [2023-12-20 17:03:42,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 17:03:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 32631 states and 37095 transitions. [2023-12-20 17:03:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-20 17:03:42,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:42,096 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:42,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 17:03:42,302 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,SelfDestructingSolverStorable9 [2023-12-20 17:03:42,302 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:42,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2072603054, now seen corresponding path program 1 times [2023-12-20 17:03:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:42,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69359153] [2023-12-20 17:03:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:42,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 17:03:42,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:42,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69359153] [2023-12-20 17:03:42,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69359153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:42,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:03:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343962705] [2023-12-20 17:03:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:42,473 INFO L87 Difference]: Start difference. First operand 32631 states and 37095 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 17:03:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:45,514 INFO L93 Difference]: Finished difference Result 76287 states and 87828 transitions. [2023-12-20 17:03:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:45,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 313 [2023-12-20 17:03:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:45,571 INFO L225 Difference]: With dead ends: 76287 [2023-12-20 17:03:45,571 INFO L226 Difference]: Without dead ends: 44444 [2023-12-20 17:03:45,597 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 17:03:45,598 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 840 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:45,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1942 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:03:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44444 states. [2023-12-20 17:03:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44444 to 43653. [2023-12-20 17:03:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43653 states, 43652 states have (on average 1.1179327407678914) internal successors, (48800), 43652 states have internal predecessors, (48800), 0 states have call successors, (0), 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 17:03:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43653 states to 43653 states and 48800 transitions. [2023-12-20 17:03:46,244 INFO L78 Accepts]: Start accepts. Automaton has 43653 states and 48800 transitions. Word has length 313 [2023-12-20 17:03:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:46,245 INFO L495 AbstractCegarLoop]: Abstraction has 43653 states and 48800 transitions. [2023-12-20 17:03:46,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 17:03:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 43653 states and 48800 transitions. [2023-12-20 17:03:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-20 17:03:46,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:46,249 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:03:46,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:03:46,250 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash 51131632, now seen corresponding path program 1 times [2023-12-20 17:03:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432070805] [2023-12-20 17:03:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:46,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 170 proven. 113 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 17:03:47,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:47,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432070805] [2023-12-20 17:03:47,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432070805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:03:47,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111312711] [2023-12-20 17:03:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:47,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:03:47,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:03:47,080 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 17:03:47,112 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 17:03:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:47,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:03:47,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:03:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 17:03:47,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:03:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111312711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:47,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:03:47,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:03:47,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214286771] [2023-12-20 17:03:47,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:47,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:47,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:03:47,299 INFO L87 Difference]: Start difference. First operand 43653 states and 48800 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 17:03:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:49,988 INFO L93 Difference]: Finished difference Result 86509 states and 96799 transitions. [2023-12-20 17:03:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:49,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 328 [2023-12-20 17:03:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:50,037 INFO L225 Difference]: With dead ends: 86509 [2023-12-20 17:03:50,037 INFO L226 Difference]: Without dead ends: 43644 [2023-12-20 17:03:50,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 327 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 17:03:50,066 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 1073 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:50,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 811 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:03:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43644 states. [2023-12-20 17:03:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43644 to 43643. [2023-12-20 17:03:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43643 states, 43642 states have (on average 1.0866367260895469) internal successors, (47423), 43642 states have internal predecessors, (47423), 0 states have call successors, (0), 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 17:03:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43643 states to 43643 states and 47423 transitions. [2023-12-20 17:03:50,538 INFO L78 Accepts]: Start accepts. Automaton has 43643 states and 47423 transitions. Word has length 328 [2023-12-20 17:03:50,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:50,538 INFO L495 AbstractCegarLoop]: Abstraction has 43643 states and 47423 transitions. [2023-12-20 17:03:50,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 17:03:50,539 INFO L276 IsEmpty]: Start isEmpty. Operand 43643 states and 47423 transitions. [2023-12-20 17:03:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-20 17:03:50,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:50,545 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 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] [2023-12-20 17:03:50,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:03:50,750 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,SelfDestructingSolverStorable11 [2023-12-20 17:03:50,750 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:50,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:50,751 INFO L85 PathProgramCache]: Analyzing trace with hash 481191473, now seen corresponding path program 1 times [2023-12-20 17:03:50,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801776377] [2023-12-20 17:03:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-20 17:03:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801776377] [2023-12-20 17:03:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801776377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:50,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:50,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:03:50,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307843498] [2023-12-20 17:03:50,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:50,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:03:50,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:03:50,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:03:50,954 INFO L87 Difference]: Start difference. First operand 43643 states and 47423 transitions. Second operand has 4 states, 4 states have (on average 71.5) 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 17:03:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:56,870 INFO L93 Difference]: Finished difference Result 150457 states and 163816 transitions. [2023-12-20 17:03:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:03:56,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) 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 370 [2023-12-20 17:03:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:57,008 INFO L225 Difference]: With dead ends: 150457 [2023-12-20 17:03:57,008 INFO L226 Difference]: Without dead ends: 107602 [2023-12-20 17:03:57,043 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 17:03:57,044 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1712 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 6005 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 6005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:57,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 750 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1095 Valid, 6005 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 17:03:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107602 states. [2023-12-20 17:03:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107602 to 104325. [2023-12-20 17:03:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104325 states, 104324 states have (on average 1.0794735631302481) internal successors, (112615), 104324 states have internal predecessors, (112615), 0 states have call successors, (0), 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 17:03:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104325 states to 104325 states and 112615 transitions. [2023-12-20 17:03:58,445 INFO L78 Accepts]: Start accepts. Automaton has 104325 states and 112615 transitions. Word has length 370 [2023-12-20 17:03:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:58,446 INFO L495 AbstractCegarLoop]: Abstraction has 104325 states and 112615 transitions. [2023-12-20 17:03:58,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) 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 17:03:58,446 INFO L276 IsEmpty]: Start isEmpty. Operand 104325 states and 112615 transitions. [2023-12-20 17:03:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-20 17:03:58,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:58,453 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2023-12-20 17:03:58,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:03:58,454 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:58,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2114146567, now seen corresponding path program 1 times [2023-12-20 17:03:58,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:58,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738828219] [2023-12-20 17:03:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:58,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 339 proven. 113 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-20 17:03:59,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:59,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738828219] [2023-12-20 17:03:59,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738828219] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:03:59,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552909543] [2023-12-20 17:03:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:59,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:03:59,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:03:59,499 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 17:03:59,499 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 17:03:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:59,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:03:59,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:03:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-20 17:03:59,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:03:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552909543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:03:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:03:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707639880] [2023-12-20 17:03:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:03:59,670 INFO L87 Difference]: Start difference. First operand 104325 states and 112615 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 17:04:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:02,690 INFO L93 Difference]: Finished difference Result 209440 states and 226029 transitions. [2023-12-20 17:04:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:02,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 413 [2023-12-20 17:04:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:02,822 INFO L225 Difference]: With dead ends: 209440 [2023-12-20 17:04:02,822 INFO L226 Difference]: Without dead ends: 105903 [2023-12-20 17:04:02,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 412 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 17:04:02,886 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 1016 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:02,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1469 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:04:02,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105903 states. [2023-12-20 17:04:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105903 to 104314. [2023-12-20 17:04:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104314 states, 104313 states have (on average 1.067326220125967) internal successors, (111336), 104313 states have internal predecessors, (111336), 0 states have call successors, (0), 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 17:04:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104314 states to 104314 states and 111336 transitions. [2023-12-20 17:04:04,590 INFO L78 Accepts]: Start accepts. Automaton has 104314 states and 111336 transitions. Word has length 413 [2023-12-20 17:04:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:04,591 INFO L495 AbstractCegarLoop]: Abstraction has 104314 states and 111336 transitions. [2023-12-20 17:04:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 17:04:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 104314 states and 111336 transitions. [2023-12-20 17:04:04,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-20 17:04:04,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:04,597 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2023-12-20 17:04:04,603 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 17:04:04,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:04,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:04,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1263514394, now seen corresponding path program 1 times [2023-12-20 17:04:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:04,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757077641] [2023-12-20 17:04:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:04,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 375 proven. 113 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-12-20 17:04:05,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757077641] [2023-12-20 17:04:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757077641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069322931] [2023-12-20 17:04:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:05,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:05,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:05,862 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 17:04:05,892 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 17:04:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:05,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:05,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-20 17:04:06,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:06,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069322931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:06,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:06,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:06,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991155635] [2023-12-20 17:04:06,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:06,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:06,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:06,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:06,081 INFO L87 Difference]: Start difference. First operand 104314 states and 111336 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 17:04:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:09,269 INFO L93 Difference]: Finished difference Result 232248 states and 248872 transitions. [2023-12-20 17:04:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:09,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 431 [2023-12-20 17:04:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:09,431 INFO L225 Difference]: With dead ends: 232248 [2023-12-20 17:04:09,431 INFO L226 Difference]: Without dead ends: 128722 [2023-12-20 17:04:09,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 430 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 17:04:09,487 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 859 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:09,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1748 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:04:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128722 states. [2023-12-20 17:04:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128722 to 126348. [2023-12-20 17:04:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126348 states, 126347 states have (on average 1.0689846217163843) internal successors, (135063), 126347 states have internal predecessors, (135063), 0 states have call successors, (0), 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 17:04:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126348 states to 126348 states and 135063 transitions. [2023-12-20 17:04:11,261 INFO L78 Accepts]: Start accepts. Automaton has 126348 states and 135063 transitions. Word has length 431 [2023-12-20 17:04:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:11,261 INFO L495 AbstractCegarLoop]: Abstraction has 126348 states and 135063 transitions. [2023-12-20 17:04:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 17:04:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 126348 states and 135063 transitions. [2023-12-20 17:04:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-20 17:04:11,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:11,270 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:11,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 17:04:11,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 17:04:11,475 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:11,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:11,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2087392529, now seen corresponding path program 1 times [2023-12-20 17:04:11,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:11,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153460870] [2023-12-20 17:04:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:11,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 443 proven. 113 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 17:04:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153460870] [2023-12-20 17:04:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153460870] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680157152] [2023-12-20 17:04:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:12,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:12,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:12,556 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 17:04:12,575 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 17:04:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:12,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:12,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-12-20 17:04:12,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680157152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:12,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:12,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058786130] [2023-12-20 17:04:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:12,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:12,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:12,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:12,746 INFO L87 Difference]: Start difference. First operand 126348 states and 135063 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 17:04:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:16,844 INFO L93 Difference]: Finished difference Result 294494 states and 314874 transitions. [2023-12-20 17:04:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:16,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 17:04:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:17,067 INFO L225 Difference]: With dead ends: 294494 [2023-12-20 17:04:17,068 INFO L226 Difference]: Without dead ends: 168934 [2023-12-20 17:04:17,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:17,146 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 881 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:17,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1860 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 17:04:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168934 states. [2023-12-20 17:04:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168934 to 155484. [2023-12-20 17:04:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155484 states, 155483 states have (on average 1.0652097013821447) internal successors, (165622), 155483 states have internal predecessors, (165622), 0 states have call successors, (0), 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 17:04:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155484 states to 155484 states and 165622 transitions. [2023-12-20 17:04:19,289 INFO L78 Accepts]: Start accepts. Automaton has 155484 states and 165622 transitions. Word has length 468 [2023-12-20 17:04:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:19,290 INFO L495 AbstractCegarLoop]: Abstraction has 155484 states and 165622 transitions. [2023-12-20 17:04:19,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 17:04:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 155484 states and 165622 transitions. [2023-12-20 17:04:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-20 17:04:19,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:19,484 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:19,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 17:04:19,685 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 17:04:19,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:19,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash 148234922, now seen corresponding path program 1 times [2023-12-20 17:04:19,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064029519] [2023-12-20 17:04:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 113 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 17:04:20,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:20,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064029519] [2023-12-20 17:04:20,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064029519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:20,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432788610] [2023-12-20 17:04:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:20,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:20,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:20,610 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 17:04:20,612 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 17:04:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:20,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:20,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-20 17:04:20,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432788610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:20,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:20,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:20,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496087523] [2023-12-20 17:04:20,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:20,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:20,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:20,903 INFO L87 Difference]: Start difference. First operand 155484 states and 165622 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 17:04:24,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:24,059 INFO L93 Difference]: Finished difference Result 308605 states and 328749 transitions. [2023-12-20 17:04:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:24,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 508 [2023-12-20 17:04:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:24,242 INFO L225 Difference]: With dead ends: 308605 [2023-12-20 17:04:24,242 INFO L226 Difference]: Without dead ends: 159420 [2023-12-20 17:04:24,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:24,318 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 938 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:24,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 494 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:04:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159420 states. [2023-12-20 17:04:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159420 to 157045. [2023-12-20 17:04:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157045 states, 157044 states have (on average 1.0566210743485902) internal successors, (165936), 157044 states have internal predecessors, (165936), 0 states have call successors, (0), 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 17:04:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157045 states to 157045 states and 165936 transitions. [2023-12-20 17:04:26,263 INFO L78 Accepts]: Start accepts. Automaton has 157045 states and 165936 transitions. Word has length 508 [2023-12-20 17:04:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:26,263 INFO L495 AbstractCegarLoop]: Abstraction has 157045 states and 165936 transitions. [2023-12-20 17:04:26,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 17:04:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 157045 states and 165936 transitions. [2023-12-20 17:04:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2023-12-20 17:04:26,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:26,472 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:26,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 17:04:26,673 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,SelfDestructingSolverStorable16 [2023-12-20 17:04:26,673 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:26,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1745099349, now seen corresponding path program 1 times [2023-12-20 17:04:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068772579] [2023-12-20 17:04:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 113 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 17:04:27,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068772579] [2023-12-20 17:04:27,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068772579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172517872] [2023-12-20 17:04:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:27,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:27,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:27,674 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:04:27,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:04:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:27,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:04:27,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-20 17:04:28,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:28,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172517872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:28,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:28,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-20 17:04:28,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563394344] [2023-12-20 17:04:28,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:28,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:28,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:28,348 INFO L87 Difference]: Start difference. First operand 157045 states and 165936 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 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 17:04:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:31,363 INFO L93 Difference]: Finished difference Result 307803 states and 325505 transitions. [2023-12-20 17:04:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:31,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 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 554 [2023-12-20 17:04:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:31,544 INFO L225 Difference]: With dead ends: 307803 [2023-12-20 17:04:31,544 INFO L226 Difference]: Without dead ends: 161781 [2023-12-20 17:04:31,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:31,611 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 682 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:31,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1130 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:04:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161781 states. [2023-12-20 17:04:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161781 to 159410. [2023-12-20 17:04:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159410 states, 159409 states have (on average 1.0517850309581014) internal successors, (167664), 159409 states have internal predecessors, (167664), 0 states have call successors, (0), 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 17:04:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159410 states to 159410 states and 167664 transitions. [2023-12-20 17:04:33,616 INFO L78 Accepts]: Start accepts. Automaton has 159410 states and 167664 transitions. Word has length 554 [2023-12-20 17:04:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:33,616 INFO L495 AbstractCegarLoop]: Abstraction has 159410 states and 167664 transitions. [2023-12-20 17:04:33,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 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 17:04:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 159410 states and 167664 transitions. [2023-12-20 17:04:33,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-20 17:04:33,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:33,629 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-12-20 17:04:33,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 17:04:33,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:33,830 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:33,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:33,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2129120202, now seen corresponding path program 1 times [2023-12-20 17:04:33,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:33,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616573946] [2023-12-20 17:04:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:33,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-12-20 17:04:34,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:34,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616573946] [2023-12-20 17:04:34,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616573946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:34,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:34,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:04:34,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373166268] [2023-12-20 17:04:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:34,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:34,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:34,348 INFO L87 Difference]: Start difference. First operand 159410 states and 167664 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 17:04:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:37,383 INFO L93 Difference]: Finished difference Result 306227 states and 322510 transitions. [2023-12-20 17:04:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 570 [2023-12-20 17:04:37,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:37,591 INFO L225 Difference]: With dead ends: 306227 [2023-12-20 17:04:37,591 INFO L226 Difference]: Without dead ends: 160203 [2023-12-20 17:04:37,667 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 17:04:37,668 INFO L413 NwaCegarLoop]: 1745 mSDtfsCounter, 722 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:37,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1878 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:04:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160203 states. [2023-12-20 17:04:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160203 to 160198. [2023-12-20 17:04:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160198 states, 160197 states have (on average 1.0517487843093192) internal successors, (168487), 160197 states have internal predecessors, (168487), 0 states have call successors, (0), 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 17:04:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160198 states to 160198 states and 168487 transitions. [2023-12-20 17:04:39,614 INFO L78 Accepts]: Start accepts. Automaton has 160198 states and 168487 transitions. Word has length 570 [2023-12-20 17:04:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:39,614 INFO L495 AbstractCegarLoop]: Abstraction has 160198 states and 168487 transitions. [2023-12-20 17:04:39,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 17:04:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 160198 states and 168487 transitions. [2023-12-20 17:04:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-12-20 17:04:39,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:39,631 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:39,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:04:39,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:39,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1349072456, now seen corresponding path program 1 times [2023-12-20 17:04:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119232042] [2023-12-20 17:04:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-20 17:04:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119232042] [2023-12-20 17:04:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119232042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:39,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:39,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:04:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327400321] [2023-12-20 17:04:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:39,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:39,842 INFO L87 Difference]: Start difference. First operand 160198 states and 168487 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:42,271 INFO L93 Difference]: Finished difference Result 306206 states and 322437 transitions. [2023-12-20 17:04:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 585 [2023-12-20 17:04:42,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:42,474 INFO L225 Difference]: With dead ends: 306206 [2023-12-20 17:04:42,474 INFO L226 Difference]: Without dead ends: 159394 [2023-12-20 17:04:42,539 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 17:04:42,539 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1608 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:42,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 290 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:04:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159394 states. [2023-12-20 17:04:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159394 to 159392. [2023-12-20 17:04:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159392 states, 159391 states have (on average 1.0514018984760745) internal successors, (167584), 159391 states have internal predecessors, (167584), 0 states have call successors, (0), 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 17:04:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159392 states to 159392 states and 167584 transitions. [2023-12-20 17:04:44,405 INFO L78 Accepts]: Start accepts. Automaton has 159392 states and 167584 transitions. Word has length 585 [2023-12-20 17:04:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:44,406 INFO L495 AbstractCegarLoop]: Abstraction has 159392 states and 167584 transitions. [2023-12-20 17:04:44,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 2 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 159392 states and 167584 transitions. [2023-12-20 17:04:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2023-12-20 17:04:44,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:44,419 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-12-20 17:04:44,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:04:44,420 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:44,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1903989375, now seen corresponding path program 1 times [2023-12-20 17:04:44,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:44,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920611380] [2023-12-20 17:04:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:44,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2023-12-20 17:04:44,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:44,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920611380] [2023-12-20 17:04:44,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920611380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:44,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:44,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:04:44,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343197654] [2023-12-20 17:04:44,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:44,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:44,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:44,950 INFO L87 Difference]: Start difference. First operand 159392 states and 167584 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 17:04:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:49,025 INFO L93 Difference]: Finished difference Result 362187 states and 381422 transitions. [2023-12-20 17:04:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:49,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 17:04:49,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:49,339 INFO L225 Difference]: With dead ends: 362187 [2023-12-20 17:04:49,339 INFO L226 Difference]: Without dead ends: 209094 [2023-12-20 17:04:49,631 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 17:04:49,632 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 914 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:49,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 988 Invalid, 3534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 3157 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:04:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209094 states. [2023-12-20 17:04:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209094 to 205069. [2023-12-20 17:04:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205069 states, 205068 states have (on average 1.0509489535178576) internal successors, (215516), 205068 states have internal predecessors, (215516), 0 states have call successors, (0), 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 17:04:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205069 states to 205069 states and 215516 transitions. [2023-12-20 17:04:52,249 INFO L78 Accepts]: Start accepts. Automaton has 205069 states and 215516 transitions. Word has length 600 [2023-12-20 17:04:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:52,250 INFO L495 AbstractCegarLoop]: Abstraction has 205069 states and 215516 transitions. [2023-12-20 17:04:52,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 17:04:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 205069 states and 215516 transitions. [2023-12-20 17:04:52,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-20 17:04:52,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:52,268 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:52,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:04:52,268 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:52,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980269, now seen corresponding path program 1 times [2023-12-20 17:04:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:52,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146902280] [2023-12-20 17:04:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:52,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 559 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-20 17:04:52,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:52,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146902280] [2023-12-20 17:04:52,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146902280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:52,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:52,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:04:52,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700524617] [2023-12-20 17:04:52,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:52,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:52,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:52,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:52,710 INFO L87 Difference]: Start difference. First operand 205069 states and 215516 transitions. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 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 17:04:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:57,076 INFO L93 Difference]: Finished difference Result 463793 states and 488076 transitions. [2023-12-20 17:04:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:57,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 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 620 [2023-12-20 17:04:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:57,412 INFO L225 Difference]: With dead ends: 463793 [2023-12-20 17:04:57,412 INFO L226 Difference]: Without dead ends: 265021 [2023-12-20 17:04:57,482 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 17:04:57,483 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 826 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2992 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 3479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:57,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 901 Invalid, 3479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2992 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:04:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265021 states. [2023-12-20 17:04:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265021 to 222385. [2023-12-20 17:05:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222385 states, 222384 states have (on average 1.0504038060292107) internal successors, (233593), 222384 states have internal predecessors, (233593), 0 states have call successors, (0), 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 17:05:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222385 states to 222385 states and 233593 transitions. [2023-12-20 17:05:00,620 INFO L78 Accepts]: Start accepts. Automaton has 222385 states and 233593 transitions. Word has length 620 [2023-12-20 17:05:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:00,620 INFO L495 AbstractCegarLoop]: Abstraction has 222385 states and 233593 transitions. [2023-12-20 17:05:00,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 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 17:05:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 222385 states and 233593 transitions. [2023-12-20 17:05:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-20 17:05:00,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:00,637 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:05:00,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:05:00,637 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:00,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash 998053075, now seen corresponding path program 1 times [2023-12-20 17:05:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:00,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552514213] [2023-12-20 17:05:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-20 17:05:01,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552514213] [2023-12-20 17:05:01,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552514213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:01,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994248778] [2023-12-20 17:05:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:01,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:01,231 INFO L87 Difference]: Start difference. First operand 222385 states and 233593 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 17:05:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:04,786 INFO L93 Difference]: Finished difference Result 446357 states and 468795 transitions. [2023-12-20 17:05:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:04,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 629 [2023-12-20 17:05:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:05,127 INFO L225 Difference]: With dead ends: 446357 [2023-12-20 17:05:05,127 INFO L226 Difference]: Without dead ends: 224760 [2023-12-20 17:05:05,510 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 17:05:05,510 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 746 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:05,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 643 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:05:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224760 states. [2023-12-20 17:05:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224760 to 222386. [2023-12-20 17:05:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222386 states, 222385 states have (on average 1.0462171459405984) internal successors, (232663), 222385 states have internal predecessors, (232663), 0 states have call successors, (0), 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 17:05:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222386 states to 222386 states and 232663 transitions. [2023-12-20 17:05:08,336 INFO L78 Accepts]: Start accepts. Automaton has 222386 states and 232663 transitions. Word has length 629 [2023-12-20 17:05:08,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:08,337 INFO L495 AbstractCegarLoop]: Abstraction has 222386 states and 232663 transitions. [2023-12-20 17:05:08,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 17:05:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 222386 states and 232663 transitions. [2023-12-20 17:05:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-20 17:05:08,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:08,353 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-20 17:05:08,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:05:08,353 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:08,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:08,353 INFO L85 PathProgramCache]: Analyzing trace with hash 49683289, now seen corresponding path program 1 times [2023-12-20 17:05:08,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:08,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096130034] [2023-12-20 17:05:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:08,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 846 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-12-20 17:05:09,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096130034] [2023-12-20 17:05:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096130034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:09,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:09,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832192359] [2023-12-20 17:05:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:09,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:09,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:09,014 INFO L87 Difference]: Start difference. First operand 222386 states and 232663 transitions. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 17:05:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:13,717 INFO L93 Difference]: Finished difference Result 528335 states and 552935 transitions. [2023-12-20 17:05:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:13,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 648 [2023-12-20 17:05:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:14,154 INFO L225 Difference]: With dead ends: 528335 [2023-12-20 17:05:14,154 INFO L226 Difference]: Without dead ends: 306737 [2023-12-20 17:05:14,207 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 17:05:14,208 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 873 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:14,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1381 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:05:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306737 states. [2023-12-20 17:05:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306737 to 298790. [2023-12-20 17:05:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298790 states, 298789 states have (on average 1.044727215526676) internal successors, (312153), 298789 states have internal predecessors, (312153), 0 states have call successors, (0), 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 17:05:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298790 states to 298790 states and 312153 transitions. [2023-12-20 17:05:18,349 INFO L78 Accepts]: Start accepts. Automaton has 298790 states and 312153 transitions. Word has length 648 [2023-12-20 17:05:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:18,350 INFO L495 AbstractCegarLoop]: Abstraction has 298790 states and 312153 transitions. [2023-12-20 17:05:18,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 17:05:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 298790 states and 312153 transitions. [2023-12-20 17:05:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-12-20 17:05:18,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:18,366 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:05:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:05:18,367 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:18,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -353050618, now seen corresponding path program 1 times [2023-12-20 17:05:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131511632] [2023-12-20 17:05:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:18,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2023-12-20 17:05:18,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131511632] [2023-12-20 17:05:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131511632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:18,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640418220] [2023-12-20 17:05:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:18,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:18,584 INFO L87 Difference]: Start difference. First operand 298790 states and 312153 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 17:05:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:23,215 INFO L93 Difference]: Finished difference Result 638493 states and 667766 transitions. [2023-12-20 17:05:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:23,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 658 [2023-12-20 17:05:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:23,934 INFO L225 Difference]: With dead ends: 638493 [2023-12-20 17:05:23,934 INFO L226 Difference]: Without dead ends: 356235 [2023-12-20 17:05:24,046 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 17:05:24,046 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 978 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:24,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 570 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:05:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356235 states. [2023-12-20 17:05:26,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356235 to 273583. [2023-12-20 17:05:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273583 states, 273582 states have (on average 1.0413952672324933) internal successors, (284907), 273582 states have internal predecessors, (284907), 0 states have call successors, (0), 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 17:05:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273583 states to 273583 states and 284907 transitions. [2023-12-20 17:05:27,721 INFO L78 Accepts]: Start accepts. Automaton has 273583 states and 284907 transitions. Word has length 658 [2023-12-20 17:05:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:27,721 INFO L495 AbstractCegarLoop]: Abstraction has 273583 states and 284907 transitions. [2023-12-20 17:05:27,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 17:05:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 273583 states and 284907 transitions. [2023-12-20 17:05:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-20 17:05:27,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:27,750 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:05:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:05:27,751 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:27,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 898083338, now seen corresponding path program 1 times [2023-12-20 17:05:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447972968] [2023-12-20 17:05:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:27,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 918 proven. 73 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 17:05:29,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447972968] [2023-12-20 17:05:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447972968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:05:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527291947] [2023-12-20 17:05:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:29,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:05:29,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:05:29,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:05:29,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 17:05:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:29,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:05:29,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:05:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-12-20 17:05:29,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:05:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527291947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:29,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:05:29,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-20 17:05:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044369581] [2023-12-20 17:05:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:29,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:05:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:05:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:05:29,587 INFO L87 Difference]: Start difference. First operand 273583 states and 284907 transitions. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 17:05:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:36,076 INFO L93 Difference]: Finished difference Result 600069 states and 625061 transitions. [2023-12-20 17:05:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:05:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 775 [2023-12-20 17:05:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:36,760 INFO L225 Difference]: With dead ends: 600069 [2023-12-20 17:05:36,760 INFO L226 Difference]: Without dead ends: 337507 [2023-12-20 17:05:36,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:05:36,867 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1667 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 6123 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 6787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 6123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:36,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1667 Valid, 792 Invalid, 6787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 6123 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:05:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337507 states. [2023-12-20 17:05:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337507 to 327149. [2023-12-20 17:05:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327149 states, 327148 states have (on average 1.0413390881191387) internal successors, (340672), 327148 states have internal predecessors, (340672), 0 states have call successors, (0), 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 17:05:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327149 states to 327149 states and 340672 transitions. [2023-12-20 17:05:40,933 INFO L78 Accepts]: Start accepts. Automaton has 327149 states and 340672 transitions. Word has length 775 [2023-12-20 17:05:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:40,933 INFO L495 AbstractCegarLoop]: Abstraction has 327149 states and 340672 transitions. [2023-12-20 17:05:40,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 17:05:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 327149 states and 340672 transitions. [2023-12-20 17:05:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-12-20 17:05:40,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:40,949 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:05:40,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 17:05:41,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 17:05:41,151 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:41,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:41,151 INFO L85 PathProgramCache]: Analyzing trace with hash -486935790, now seen corresponding path program 1 times [2023-12-20 17:05:41,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:41,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759106397] [2023-12-20 17:05:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:41,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-20 17:05:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:41,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759106397] [2023-12-20 17:05:41,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759106397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:41,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:41,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:41,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072880474] [2023-12-20 17:05:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:41,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:41,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:41,710 INFO L87 Difference]: Start difference. First operand 327149 states and 340672 transitions. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 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 17:05:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:45,426 INFO L93 Difference]: Finished difference Result 638560 states and 665468 transitions. [2023-12-20 17:05:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:45,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 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 792 [2023-12-20 17:05:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:46,182 INFO L225 Difference]: With dead ends: 638560 [2023-12-20 17:05:46,182 INFO L226 Difference]: Without dead ends: 328730 [2023-12-20 17:05:46,272 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 17:05:46,273 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 532 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:46,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1848 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:05:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328730 states.