/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/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:09:33,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:09:33,459 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:09:33,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:09:33,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:09:33,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:09:33,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:09:33,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:09:33,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:09:33,506 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:09:33,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:09:33,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:09:33,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:09:33,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:09:33,510 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:09:33,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:09:33,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:09:33,510 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:09:33,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:09:33,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:09:33,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:09:33,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:09:33,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:09:33,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:09:33,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:09:33,512 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:09:33,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:09:33,513 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:09:33,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:09:33,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:09:33,514 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:09:33,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:09:33,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:09:33,515 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:09:33,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:09:33,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:09:33,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:09:33,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:09:33,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:09:33,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:09:33,516 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:09:33,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:09:33,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:09:33,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:09:33,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:09:33,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:09:33,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:09:33,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:09:33,736 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:09:33,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:09:34,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:09:35,157 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:09:35,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:09:35,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c131a892d/1ed4d38e102d45e38143b72cce9ba3cb/FLAG84d81b047 [2023-12-21 14:09:35,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c131a892d/1ed4d38e102d45e38143b72cce9ba3cb [2023-12-21 14:09:35,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:09:35,196 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:09:35,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:09:35,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:09:35,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:09:35,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a37011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35, skipping insertion in model container [2023-12-21 14:09:35,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:09:35,484 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2023-12-21 14:09:35,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:09:35,566 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:09:35,627 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2023-12-21 14:09:35,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:09:35,673 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:09:35,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35 WrapperNode [2023-12-21 14:09:35,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:09:35,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:09:35,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:09:35,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:09:35,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,739 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 790 [2023-12-21 14:09:35,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:09:35,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:09:35,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:09:35,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:09:35,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,782 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]. [2023-12-21 14:09:35,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:09:35,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:09:35,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:09:35,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:09:35,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (1/1) ... [2023-12-21 14:09:35,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:09:35,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:09:35,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 14:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:09:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:09:35,951 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 [2023-12-21 14:09:36,098 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:09:36,099 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:09:36,643 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:09:36,683 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:09:36,683 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:09:36,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:09:36 BoogieIcfgContainer [2023-12-21 14:09:36,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:09:36,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:09:36,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:09:36,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:09:36,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:09:35" (1/3) ... [2023-12-21 14:09:36,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea3e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:09:36, skipping insertion in model container [2023-12-21 14:09:36,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:09:35" (2/3) ... [2023-12-21 14:09:36,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea3e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:09:36, skipping insertion in model container [2023-12-21 14:09:36,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:09:36" (3/3) ... [2023-12-21 14:09:36,692 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:09:36,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:09:36,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:09:36,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:09:36,768 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;@424d47fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:09:36,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:09:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 173 states have (on average 1.76878612716763) internal successors, (306), 174 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 14:09:36,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:36,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:36,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:36,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1750664296, now seen corresponding path program 1 times [2023-12-21 14:09:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315814421] [2023-12-21 14:09:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:37,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315814421] [2023-12-21 14:09:37,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315814421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:37,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:37,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19899157] [2023-12-21 14:09:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:37,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:37,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:37,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:37,631 INFO L87 Difference]: Start difference. First operand has 175 states, 173 states have (on average 1.76878612716763) internal successors, (306), 174 states have internal predecessors, (306), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.125) internal successors, (89), 8 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) [2023-12-21 14:09:38,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:38,128 INFO L93 Difference]: Finished difference Result 1122 states and 1822 transitions. [2023-12-21 14:09:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:09:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 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 [2023-12-21 14:09:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:38,151 INFO L225 Difference]: With dead ends: 1122 [2023-12-21 14:09:38,151 INFO L226 Difference]: Without dead ends: 1035 [2023-12-21 14:09:38,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:09:38,159 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 2259 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:38,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 3042 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-21 14:09:38,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 268. [2023-12-21 14:09:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.4606741573033708) internal successors, (390), 267 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 390 transitions. [2023-12-21 14:09:38,240 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 390 transitions. Word has length 89 [2023-12-21 14:09:38,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:38,241 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 390 transitions. [2023-12-21 14:09:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 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) [2023-12-21 14:09:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 390 transitions. [2023-12-21 14:09:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:38,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:38,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:09:38,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:38,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash 598542838, now seen corresponding path program 1 times [2023-12-21 14:09:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:38,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919906911] [2023-12-21 14:09:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:38,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:38,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919906911] [2023-12-21 14:09:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919906911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:38,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:38,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276268252] [2023-12-21 14:09:38,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:38,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:38,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:38,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:38,557 INFO L87 Difference]: Start difference. First operand 268 states and 390 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:38,804 INFO L93 Difference]: Finished difference Result 1234 states and 1924 transitions. [2023-12-21 14:09:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:38,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:38,812 INFO L225 Difference]: With dead ends: 1234 [2023-12-21 14:09:38,813 INFO L226 Difference]: Without dead ends: 1094 [2023-12-21 14:09:38,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:38,816 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1604 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:38,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 1852 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-12-21 14:09:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 427. [2023-12-21 14:09:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.511737089201878) internal successors, (644), 426 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 644 transitions. [2023-12-21 14:09:38,847 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 644 transitions. Word has length 91 [2023-12-21 14:09:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:38,847 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 644 transitions. [2023-12-21 14:09:38,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 644 transitions. [2023-12-21 14:09:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:38,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:38,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:38,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:09:38,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:38,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1792374712, now seen corresponding path program 1 times [2023-12-21 14:09:38,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:38,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816033499] [2023-12-21 14:09:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:38,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:39,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:39,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816033499] [2023-12-21 14:09:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816033499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:39,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:39,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:39,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877561783] [2023-12-21 14:09:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:39,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:39,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:39,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:39,115 INFO L87 Difference]: Start difference. First operand 427 states and 644 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:39,311 INFO L93 Difference]: Finished difference Result 1388 states and 2170 transitions. [2023-12-21 14:09:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:39,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:39,319 INFO L225 Difference]: With dead ends: 1388 [2023-12-21 14:09:39,319 INFO L226 Difference]: Without dead ends: 1248 [2023-12-21 14:09:39,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:39,326 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1905 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:39,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1905 Valid, 1702 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2023-12-21 14:09:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 640. [2023-12-21 14:09:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 1.539906103286385) internal successors, (984), 639 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 984 transitions. [2023-12-21 14:09:39,350 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 984 transitions. Word has length 91 [2023-12-21 14:09:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:39,354 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 984 transitions. [2023-12-21 14:09:39,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 984 transitions. [2023-12-21 14:09:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:39,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:39,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:39,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:09:39,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:39,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1021271886, now seen corresponding path program 1 times [2023-12-21 14:09:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:39,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229188007] [2023-12-21 14:09:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:39,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:39,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:39,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229188007] [2023-12-21 14:09:39,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229188007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:39,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514651264] [2023-12-21 14:09:39,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:39,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:39,571 INFO L87 Difference]: Start difference. First operand 640 states and 984 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:39,766 INFO L93 Difference]: Finished difference Result 1527 states and 2392 transitions. [2023-12-21 14:09:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:39,772 INFO L225 Difference]: With dead ends: 1527 [2023-12-21 14:09:39,772 INFO L226 Difference]: Without dead ends: 1387 [2023-12-21 14:09:39,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:39,779 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 2018 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:39,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2018 Valid, 1589 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2023-12-21 14:09:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 779. [2023-12-21 14:09:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 1.5501285347043703) internal successors, (1206), 778 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1206 transitions. [2023-12-21 14:09:39,836 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1206 transitions. Word has length 91 [2023-12-21 14:09:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:39,837 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1206 transitions. [2023-12-21 14:09:39,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1206 transitions. [2023-12-21 14:09:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:39,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:39,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:39,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:09:39,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:39,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:39,842 INFO L85 PathProgramCache]: Analyzing trace with hash -269895154, now seen corresponding path program 1 times [2023-12-21 14:09:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:39,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617575226] [2023-12-21 14:09:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:39,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:39,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:39,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617575226] [2023-12-21 14:09:39,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617575226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:39,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:39,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156290819] [2023-12-21 14:09:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:39,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:39,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:39,913 INFO L87 Difference]: Start difference. First operand 779 states and 1206 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:39,948 INFO L93 Difference]: Finished difference Result 1967 states and 3096 transitions. [2023-12-21 14:09:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:39,953 INFO L225 Difference]: With dead ends: 1967 [2023-12-21 14:09:39,953 INFO L226 Difference]: Without dead ends: 1344 [2023-12-21 14:09:39,954 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 [2023-12-21 14:09:39,955 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 99 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:39,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 557 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-12-21 14:09:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1324. [2023-12-21 14:09:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 1.5525321239606953) internal successors, (2054), 1323 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2054 transitions. [2023-12-21 14:09:39,987 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2054 transitions. Word has length 91 [2023-12-21 14:09:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:39,988 INFO L495 AbstractCegarLoop]: Abstraction has 1324 states and 2054 transitions. [2023-12-21 14:09:39,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:39,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2054 transitions. [2023-12-21 14:09:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:39,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:39,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:39,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:09:39,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:39,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash -25817491, now seen corresponding path program 1 times [2023-12-21 14:09:39,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:39,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246553906] [2023-12-21 14:09:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:39,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:40,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246553906] [2023-12-21 14:09:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246553906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:40,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:09:40,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489824386] [2023-12-21 14:09:40,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:40,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:09:40,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:09:40,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:09:40,069 INFO L87 Difference]: Start difference. First operand 1324 states and 2054 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:40,117 INFO L93 Difference]: Finished difference Result 2494 states and 3899 transitions. [2023-12-21 14:09:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:09:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:40,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:40,123 INFO L225 Difference]: With dead ends: 2494 [2023-12-21 14:09:40,123 INFO L226 Difference]: Without dead ends: 1326 [2023-12-21 14:09:40,124 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 [2023-12-21 14:09:40,125 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 125 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:40,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 539 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:09:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2023-12-21 14:09:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1324. [2023-12-21 14:09:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1323 states have (on average 1.5487528344671202) internal successors, (2049), 1323 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2049 transitions. [2023-12-21 14:09:40,154 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2049 transitions. Word has length 91 [2023-12-21 14:09:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:40,154 INFO L495 AbstractCegarLoop]: Abstraction has 1324 states and 2049 transitions. [2023-12-21 14:09:40,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2049 transitions. [2023-12-21 14:09:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:40,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:40,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:40,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:09:40,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:40,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1611133858, now seen corresponding path program 1 times [2023-12-21 14:09:40,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:40,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411550271] [2023-12-21 14:09:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:40,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:40,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411550271] [2023-12-21 14:09:40,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411550271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:40,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:40,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436659696] [2023-12-21 14:09:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:40,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:40,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:40,332 INFO L87 Difference]: Start difference. First operand 1324 states and 2049 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:40,541 INFO L93 Difference]: Finished difference Result 2942 states and 4593 transitions. [2023-12-21 14:09:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:40,550 INFO L225 Difference]: With dead ends: 2942 [2023-12-21 14:09:40,550 INFO L226 Difference]: Without dead ends: 2681 [2023-12-21 14:09:40,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:40,553 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1553 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:40,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 2012 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2023-12-21 14:09:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 1594. [2023-12-21 14:09:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.5530445699937225) internal successors, (2474), 1593 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2474 transitions. [2023-12-21 14:09:40,600 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2474 transitions. Word has length 91 [2023-12-21 14:09:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:40,600 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2474 transitions. [2023-12-21 14:09:40,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2474 transitions. [2023-12-21 14:09:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:40,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:40,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:40,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:09:40,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:40,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:40,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1098078820, now seen corresponding path program 1 times [2023-12-21 14:09:40,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:40,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267713634] [2023-12-21 14:09:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:40,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:40,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:40,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267713634] [2023-12-21 14:09:40,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267713634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:40,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:40,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:40,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424433080] [2023-12-21 14:09:40,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:40,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:40,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:40,792 INFO L87 Difference]: Start difference. First operand 1594 states and 2474 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:41,010 INFO L93 Difference]: Finished difference Result 3212 states and 5018 transitions. [2023-12-21 14:09:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:41,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:41,020 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 14:09:41,020 INFO L226 Difference]: Without dead ends: 2951 [2023-12-21 14:09:41,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:41,024 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1748 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:41,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 2394 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2023-12-21 14:09:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1869. [2023-12-21 14:09:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 1.5562098501070665) internal successors, (2907), 1868 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2907 transitions. [2023-12-21 14:09:41,072 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2907 transitions. Word has length 91 [2023-12-21 14:09:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:41,072 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2907 transitions. [2023-12-21 14:09:41,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2907 transitions. [2023-12-21 14:09:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:09:41,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:41,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:41,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:09:41,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:41,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1705387248, now seen corresponding path program 1 times [2023-12-21 14:09:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:41,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257844332] [2023-12-21 14:09:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:41,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:41,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257844332] [2023-12-21 14:09:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257844332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:41,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:41,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:41,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030209650] [2023-12-21 14:09:41,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:41,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:41,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:41,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:41,243 INFO L87 Difference]: Start difference. First operand 1869 states and 2907 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:41,423 INFO L93 Difference]: Finished difference Result 3492 states and 5459 transitions. [2023-12-21 14:09:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:09:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:09:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:41,435 INFO L225 Difference]: With dead ends: 3492 [2023-12-21 14:09:41,435 INFO L226 Difference]: Without dead ends: 3231 [2023-12-21 14:09:41,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:09:41,438 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2003 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:41,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2003 Valid, 1922 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2023-12-21 14:09:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 2149. [2023-12-21 14:09:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 1.558659217877095) internal successors, (3348), 2148 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3348 transitions. [2023-12-21 14:09:41,494 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3348 transitions. Word has length 91 [2023-12-21 14:09:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:41,494 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3348 transitions. [2023-12-21 14:09:41,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3348 transitions. [2023-12-21 14:09:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 14:09:41,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:41,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:41,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:09:41,496 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:41,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash 456833028, now seen corresponding path program 1 times [2023-12-21 14:09:41,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:41,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358747576] [2023-12-21 14:09:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:41,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:41,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:41,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358747576] [2023-12-21 14:09:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358747576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:41,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863478905] [2023-12-21 14:09:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:41,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:41,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:41,609 INFO L87 Difference]: Start difference. First operand 2149 states and 3348 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:41,751 INFO L93 Difference]: Finished difference Result 4237 states and 6630 transitions. [2023-12-21 14:09:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-21 14:09:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:41,758 INFO L225 Difference]: With dead ends: 4237 [2023-12-21 14:09:41,758 INFO L226 Difference]: Without dead ends: 2149 [2023-12-21 14:09:41,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:41,761 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 616 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:41,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 162 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-21 14:09:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-12-21 14:09:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 1.5442271880819367) internal successors, (3317), 2148 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3317 transitions. [2023-12-21 14:09:41,801 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3317 transitions. Word has length 92 [2023-12-21 14:09:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:41,801 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3317 transitions. [2023-12-21 14:09:41,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3317 transitions. [2023-12-21 14:09:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 14:09:41,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:41,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:41,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:09:41,803 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:41,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1723888695, now seen corresponding path program 1 times [2023-12-21 14:09:41,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:41,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056047423] [2023-12-21 14:09:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056047423] [2023-12-21 14:09:41,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056047423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:41,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:41,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924068641] [2023-12-21 14:09:41,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:41,935 INFO L87 Difference]: Start difference. First operand 2149 states and 3317 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:42,069 INFO L93 Difference]: Finished difference Result 4245 states and 6578 transitions. [2023-12-21 14:09:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:42,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-21 14:09:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:42,077 INFO L225 Difference]: With dead ends: 4245 [2023-12-21 14:09:42,077 INFO L226 Difference]: Without dead ends: 2149 [2023-12-21 14:09:42,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:42,080 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 632 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:42,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 146 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-21 14:09:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-12-21 14:09:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 1.5297951582867784) internal successors, (3286), 2148 states have internal predecessors, (3286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3286 transitions. [2023-12-21 14:09:42,124 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3286 transitions. Word has length 93 [2023-12-21 14:09:42,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:42,125 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3286 transitions. [2023-12-21 14:09:42,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3286 transitions. [2023-12-21 14:09:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 14:09:42,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:42,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:09:42,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:42,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1157479588, now seen corresponding path program 1 times [2023-12-21 14:09:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:42,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565217990] [2023-12-21 14:09:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:42,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565217990] [2023-12-21 14:09:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565217990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382539391] [2023-12-21 14:09:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:42,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:42,239 INFO L87 Difference]: Start difference. First operand 2149 states and 3286 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:42,377 INFO L93 Difference]: Finished difference Result 4241 states and 6512 transitions. [2023-12-21 14:09:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:42,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-21 14:09:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:42,384 INFO L225 Difference]: With dead ends: 4241 [2023-12-21 14:09:42,384 INFO L226 Difference]: Without dead ends: 2149 [2023-12-21 14:09:42,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:42,388 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 614 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:42,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 154 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-21 14:09:42,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-12-21 14:09:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 1.51536312849162) internal successors, (3255), 2148 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3255 transitions. [2023-12-21 14:09:42,438 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3255 transitions. Word has length 94 [2023-12-21 14:09:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:42,438 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3255 transitions. [2023-12-21 14:09:42,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3255 transitions. [2023-12-21 14:09:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:09:42,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:42,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:42,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:09:42,440 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:42,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:42,440 INFO L85 PathProgramCache]: Analyzing trace with hash 452747421, now seen corresponding path program 1 times [2023-12-21 14:09:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:42,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791978898] [2023-12-21 14:09:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:42,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:42,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:42,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791978898] [2023-12-21 14:09:42,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791978898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:42,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:42,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:42,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275548024] [2023-12-21 14:09:42,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:42,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:42,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:42,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:42,541 INFO L87 Difference]: Start difference. First operand 2149 states and 3255 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:42,679 INFO L93 Difference]: Finished difference Result 4249 states and 6459 transitions. [2023-12-21 14:09:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:09:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:42,696 INFO L225 Difference]: With dead ends: 4249 [2023-12-21 14:09:42,696 INFO L226 Difference]: Without dead ends: 2149 [2023-12-21 14:09:42,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:42,700 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 631 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:42,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 138 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-21 14:09:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2023-12-21 14:09:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 1.500931098696462) internal successors, (3224), 2148 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3224 transitions. [2023-12-21 14:09:42,739 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3224 transitions. Word has length 95 [2023-12-21 14:09:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:42,740 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3224 transitions. [2023-12-21 14:09:42,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3224 transitions. [2023-12-21 14:09:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 14:09:42,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:42,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:42,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:09:42,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:42,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash -564717780, now seen corresponding path program 1 times [2023-12-21 14:09:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291756834] [2023-12-21 14:09:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:42,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291756834] [2023-12-21 14:09:42,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291756834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:42,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:42,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732818174] [2023-12-21 14:09:42,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:42,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:42,831 INFO L87 Difference]: Start difference. First operand 2149 states and 3224 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:43,060 INFO L93 Difference]: Finished difference Result 6295 states and 9496 transitions. [2023-12-21 14:09:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:43,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-21 14:09:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:43,066 INFO L225 Difference]: With dead ends: 6295 [2023-12-21 14:09:43,067 INFO L226 Difference]: Without dead ends: 4191 [2023-12-21 14:09:43,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:43,070 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 934 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:43,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 211 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2023-12-21 14:09:43,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 4189. [2023-12-21 14:09:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.5009551098376313) internal successors, (6286), 4188 states have internal predecessors, (6286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6286 transitions. [2023-12-21 14:09:43,139 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6286 transitions. Word has length 96 [2023-12-21 14:09:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:43,140 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6286 transitions. [2023-12-21 14:09:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6286 transitions. [2023-12-21 14:09:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 14:09:43,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:43,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:43,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:09:43,142 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:43,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1738291087, now seen corresponding path program 1 times [2023-12-21 14:09:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568742436] [2023-12-21 14:09:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:43,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568742436] [2023-12-21 14:09:43,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568742436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:43,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:43,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:09:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022214359] [2023-12-21 14:09:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:43,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:09:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:09:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:09:43,250 INFO L87 Difference]: Start difference. First operand 4189 states and 6286 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:43,380 INFO L93 Difference]: Finished difference Result 8313 states and 12506 transitions. [2023-12-21 14:09:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:09:43,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-21 14:09:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:43,387 INFO L225 Difference]: With dead ends: 8313 [2023-12-21 14:09:43,388 INFO L226 Difference]: Without dead ends: 4189 [2023-12-21 14:09:43,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:09:43,393 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 573 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:43,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 170 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:09:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2023-12-21 14:09:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 4189. [2023-12-21 14:09:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.4863896848137537) internal successors, (6225), 4188 states have internal predecessors, (6225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6225 transitions. [2023-12-21 14:09:43,452 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6225 transitions. Word has length 97 [2023-12-21 14:09:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:43,452 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6225 transitions. [2023-12-21 14:09:43,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6225 transitions. [2023-12-21 14:09:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 14:09:43,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:43,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:43,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:09:43,454 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:43,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash 267651336, now seen corresponding path program 1 times [2023-12-21 14:09:43,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:43,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033986457] [2023-12-21 14:09:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033986457] [2023-12-21 14:09:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033986457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:43,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:43,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 14:09:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746433423] [2023-12-21 14:09:43,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:44,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 14:09:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:44,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 14:09:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:09:44,001 INFO L87 Difference]: Start difference. First operand 4189 states and 6225 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:44,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:44,636 INFO L93 Difference]: Finished difference Result 12341 states and 18329 transitions. [2023-12-21 14:09:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:09:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-21 14:09:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:44,653 INFO L225 Difference]: With dead ends: 12341 [2023-12-21 14:09:44,654 INFO L226 Difference]: Without dead ends: 8340 [2023-12-21 14:09:44,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-21 14:09:44,661 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1695 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:44,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 529 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:09:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8340 states. [2023-12-21 14:09:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8340 to 4189. [2023-12-21 14:09:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.484240687679083) internal successors, (6216), 4188 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6216 transitions. [2023-12-21 14:09:44,751 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6216 transitions. Word has length 98 [2023-12-21 14:09:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:44,752 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6216 transitions. [2023-12-21 14:09:44,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6216 transitions. [2023-12-21 14:09:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 14:09:44,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:44,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:44,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:09:44,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:44,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash 954309932, now seen corresponding path program 1 times [2023-12-21 14:09:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046331908] [2023-12-21 14:09:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:45,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:45,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046331908] [2023-12-21 14:09:45,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046331908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:45,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:45,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:09:45,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043361381] [2023-12-21 14:09:45,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:45,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:09:45,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:09:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:09:45,056 INFO L87 Difference]: Start difference. First operand 4189 states and 6216 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:45,442 INFO L93 Difference]: Finished difference Result 12075 states and 17966 transitions. [2023-12-21 14:09:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 14:09:45,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-21 14:09:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:45,463 INFO L225 Difference]: With dead ends: 12075 [2023-12-21 14:09:45,463 INFO L226 Difference]: Without dead ends: 8090 [2023-12-21 14:09:45,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-21 14:09:45,469 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1354 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:45,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 390 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8090 states. [2023-12-21 14:09:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8090 to 4189. [2023-12-21 14:09:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.4840019102196753) internal successors, (6215), 4188 states have internal predecessors, (6215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6215 transitions. [2023-12-21 14:09:45,561 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6215 transitions. Word has length 99 [2023-12-21 14:09:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:45,562 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6215 transitions. [2023-12-21 14:09:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6215 transitions. [2023-12-21 14:09:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 14:09:45,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:45,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:09:45,563 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:45,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1214345274, now seen corresponding path program 1 times [2023-12-21 14:09:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:45,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487389729] [2023-12-21 14:09:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:45,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:45,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:45,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487389729] [2023-12-21 14:09:45,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487389729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:45,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:45,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:45,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547266806] [2023-12-21 14:09:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:45,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:09:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:09:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:09:45,863 INFO L87 Difference]: Start difference. First operand 4189 states and 6215 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:46,409 INFO L93 Difference]: Finished difference Result 8869 states and 13142 transitions. [2023-12-21 14:09:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:09:46,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-21 14:09:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:46,419 INFO L225 Difference]: With dead ends: 8869 [2023-12-21 14:09:46,419 INFO L226 Difference]: Without dead ends: 4823 [2023-12-21 14:09:46,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:09:46,426 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1030 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:46,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 671 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:09:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2023-12-21 14:09:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 4189. [2023-12-21 14:09:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.4832855778414518) internal successors, (6212), 4188 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6212 transitions. [2023-12-21 14:09:46,498 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6212 transitions. Word has length 99 [2023-12-21 14:09:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:46,498 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6212 transitions. [2023-12-21 14:09:46,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6212 transitions. [2023-12-21 14:09:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 14:09:46,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:46,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:46,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:09:46,500 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:46,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1632759919, now seen corresponding path program 1 times [2023-12-21 14:09:46,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:46,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009919515] [2023-12-21 14:09:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:46,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:46,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009919515] [2023-12-21 14:09:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009919515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306635297] [2023-12-21 14:09:46,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:46,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:09:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:09:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:09:46,844 INFO L87 Difference]: Start difference. First operand 4189 states and 6212 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:47,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:47,306 INFO L93 Difference]: Finished difference Result 12266 states and 18196 transitions. [2023-12-21 14:09:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:09:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-21 14:09:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:47,321 INFO L225 Difference]: With dead ends: 12266 [2023-12-21 14:09:47,321 INFO L226 Difference]: Without dead ends: 8310 [2023-12-21 14:09:47,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:09:47,329 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1051 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:47,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 502 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:09:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2023-12-21 14:09:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 4189. [2023-12-21 14:09:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.4806590257879657) internal successors, (6201), 4188 states have internal predecessors, (6201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6201 transitions. [2023-12-21 14:09:47,419 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6201 transitions. Word has length 100 [2023-12-21 14:09:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:47,419 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6201 transitions. [2023-12-21 14:09:47,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6201 transitions. [2023-12-21 14:09:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 14:09:47,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:47,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:47,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:09:47,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:47,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -265547908, now seen corresponding path program 1 times [2023-12-21 14:09:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671343963] [2023-12-21 14:09:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:47,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:47,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:47,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671343963] [2023-12-21 14:09:47,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671343963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:47,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:47,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:47,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653939012] [2023-12-21 14:09:47,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:09:47,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:09:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:09:47,743 INFO L87 Difference]: Start difference. First operand 4189 states and 6201 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:48,352 INFO L93 Difference]: Finished difference Result 12386 states and 18347 transitions. [2023-12-21 14:09:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:09:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-21 14:09:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:48,370 INFO L225 Difference]: With dead ends: 12386 [2023-12-21 14:09:48,370 INFO L226 Difference]: Without dead ends: 8355 [2023-12-21 14:09:48,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:09:48,378 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1402 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:48,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 508 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:09:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8355 states. [2023-12-21 14:09:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8355 to 4189. [2023-12-21 14:09:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.4792263610315186) internal successors, (6195), 4188 states have internal predecessors, (6195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6195 transitions. [2023-12-21 14:09:48,473 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6195 transitions. Word has length 101 [2023-12-21 14:09:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:48,474 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6195 transitions. [2023-12-21 14:09:48,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6195 transitions. [2023-12-21 14:09:48,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 14:09:48,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:48,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:48,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:09:48,475 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:48,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:48,476 INFO L85 PathProgramCache]: Analyzing trace with hash -676850723, now seen corresponding path program 1 times [2023-12-21 14:09:48,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:48,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119382330] [2023-12-21 14:09:48,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:48,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:49,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119382330] [2023-12-21 14:09:49,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119382330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:49,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:49,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 14:09:49,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113161040] [2023-12-21 14:09:49,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:49,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 14:09:49,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:49,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 14:09:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:09:49,066 INFO L87 Difference]: Start difference. First operand 4189 states and 6195 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:51,557 INFO L93 Difference]: Finished difference Result 71775 states and 105528 transitions. [2023-12-21 14:09:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 14:09:51,557 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-21 14:09:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:51,695 INFO L225 Difference]: With dead ends: 71775 [2023-12-21 14:09:51,695 INFO L226 Difference]: Without dead ends: 67874 [2023-12-21 14:09:51,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=570, Invalid=1880, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 14:09:51,713 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 5608 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5608 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:51,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5608 Valid, 1332 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 14:09:51,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67874 states. [2023-12-21 14:09:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67874 to 4222. [2023-12-21 14:09:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4222 states, 4221 states have (on average 1.4750059227671168) internal successors, (6226), 4221 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 6226 transitions. [2023-12-21 14:09:52,361 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 6226 transitions. Word has length 102 [2023-12-21 14:09:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:52,362 INFO L495 AbstractCegarLoop]: Abstraction has 4222 states and 6226 transitions. [2023-12-21 14:09:52,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 6226 transitions. [2023-12-21 14:09:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:09:52,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:52,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:52,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:09:52,364 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:52,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:52,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434782, now seen corresponding path program 1 times [2023-12-21 14:09:52,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:52,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236138836] [2023-12-21 14:09:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:52,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:52,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:52,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236138836] [2023-12-21 14:09:52,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236138836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:52,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:52,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:09:52,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853252638] [2023-12-21 14:09:52,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:52,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:09:52,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:52,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:09:52,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:09:52,704 INFO L87 Difference]: Start difference. First operand 4222 states and 6226 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:09:53,288 INFO L93 Difference]: Finished difference Result 12170 states and 18010 transitions. [2023-12-21 14:09:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:09:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-21 14:09:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:09:53,302 INFO L225 Difference]: With dead ends: 12170 [2023-12-21 14:09:53,303 INFO L226 Difference]: Without dead ends: 8271 [2023-12-21 14:09:53,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:09:53,311 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 932 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:09:53,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 647 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:09:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2023-12-21 14:09:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 4189. [2023-12-21 14:09:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 1.4761222540592167) internal successors, (6182), 4188 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6182 transitions. [2023-12-21 14:09:53,390 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6182 transitions. Word has length 103 [2023-12-21 14:09:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:09:53,391 INFO L495 AbstractCegarLoop]: Abstraction has 4189 states and 6182 transitions. [2023-12-21 14:09:53,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:09:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6182 transitions. [2023-12-21 14:09:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:09:53,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:09:53,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:09:53,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:09:53,393 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:09:53,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:09:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash -65314201, now seen corresponding path program 1 times [2023-12-21 14:09:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:09:53,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542535249] [2023-12-21 14:09:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:09:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:09:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:09:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:09:56,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:09:56,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542535249] [2023-12-21 14:09:56,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542535249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:09:56,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:09:56,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2023-12-21 14:09:56,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555951086] [2023-12-21 14:09:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:09:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 14:09:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:09:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 14:09:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1379, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:09:56,262 INFO L87 Difference]: Start difference. First operand 4189 states and 6182 transitions. Second operand has 39 states, 39 states have (on average 2.641025641025641) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:07,171 INFO L93 Difference]: Finished difference Result 13588 states and 20128 transitions. [2023-12-21 14:10:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 14:10:07,172 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.641025641025641) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-21 14:10:07,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:07,191 INFO L225 Difference]: With dead ends: 13588 [2023-12-21 14:10:07,191 INFO L226 Difference]: Without dead ends: 12548 [2023-12-21 14:10:07,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=911, Invalid=5095, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 14:10:07,199 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 3013 mSDsluCounter, 17358 mSDsCounter, 0 mSdLazyCounter, 12388 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 18201 SdHoareTripleChecker+Invalid, 12397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:07,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 18201 Invalid, 12397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 12388 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-21 14:10:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12548 states. [2023-12-21 14:10:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12548 to 4214. [2023-12-21 14:10:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4214 states, 4213 states have (on average 1.474721101352955) internal successors, (6213), 4213 states have internal predecessors, (6213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 6213 transitions. [2023-12-21 14:10:07,297 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 6213 transitions. Word has length 103 [2023-12-21 14:10:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:07,297 INFO L495 AbstractCegarLoop]: Abstraction has 4214 states and 6213 transitions. [2023-12-21 14:10:07,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.641025641025641) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 6213 transitions. [2023-12-21 14:10:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:10:07,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:07,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:07,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:10:07,299 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:07,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:07,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1227132456, now seen corresponding path program 1 times [2023-12-21 14:10:07,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:07,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658808811] [2023-12-21 14:10:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:07,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:07,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658808811] [2023-12-21 14:10:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658808811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315337301] [2023-12-21 14:10:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:07,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:07,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:07,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:07,950 INFO L87 Difference]: Start difference. First operand 4214 states and 6213 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:08,788 INFO L93 Difference]: Finished difference Result 17298 states and 25667 transitions. [2023-12-21 14:10:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:10:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-21 14:10:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:08,808 INFO L225 Difference]: With dead ends: 17298 [2023-12-21 14:10:08,808 INFO L226 Difference]: Without dead ends: 16196 [2023-12-21 14:10:08,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:10:08,817 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1525 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:08,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 2597 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16196 states. [2023-12-21 14:10:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16196 to 4177. [2023-12-21 14:10:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 4176 states have (on average 1.4741379310344827) internal successors, (6156), 4176 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 6156 transitions. [2023-12-21 14:10:08,932 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 6156 transitions. Word has length 103 [2023-12-21 14:10:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:08,932 INFO L495 AbstractCegarLoop]: Abstraction has 4177 states and 6156 transitions. [2023-12-21 14:10:08,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 6156 transitions. [2023-12-21 14:10:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:10:08,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:08,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 14:10:08,934 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:08,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash 280763624, now seen corresponding path program 1 times [2023-12-21 14:10:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:08,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806493820] [2023-12-21 14:10:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:08,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:11,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:11,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806493820] [2023-12-21 14:10:11,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806493820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:11,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:11,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2023-12-21 14:10:11,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485725125] [2023-12-21 14:10:11,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:11,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 14:10:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 14:10:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1376, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:10:11,478 INFO L87 Difference]: Start difference. First operand 4177 states and 6156 transitions. Second operand has 39 states, 39 states have (on average 2.641025641025641) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:21,539 INFO L93 Difference]: Finished difference Result 13535 states and 20040 transitions. [2023-12-21 14:10:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 14:10:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.641025641025641) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-21 14:10:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:21,549 INFO L225 Difference]: With dead ends: 13535 [2023-12-21 14:10:21,549 INFO L226 Difference]: Without dead ends: 12495 [2023-12-21 14:10:21,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=802, Invalid=4600, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 14:10:21,552 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 2401 mSDsluCounter, 18724 mSDsCounter, 0 mSdLazyCounter, 12975 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 19528 SdHoareTripleChecker+Invalid, 12978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:21,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 19528 Invalid, 12978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12975 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-21 14:10:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12495 states. [2023-12-21 14:10:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12495 to 4201. [2023-12-21 14:10:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4201 states, 4200 states have (on average 1.473095238095238) internal successors, (6187), 4200 states have internal predecessors, (6187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4201 states to 4201 states and 6187 transitions. [2023-12-21 14:10:21,639 INFO L78 Accepts]: Start accepts. Automaton has 4201 states and 6187 transitions. Word has length 103 [2023-12-21 14:10:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:21,639 INFO L495 AbstractCegarLoop]: Abstraction has 4201 states and 6187 transitions. [2023-12-21 14:10:21,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.641025641025641) internal successors, (103), 38 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4201 states and 6187 transitions. [2023-12-21 14:10:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:10:21,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:21,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:21,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 14:10:21,641 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:21,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1415585753, now seen corresponding path program 1 times [2023-12-21 14:10:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:21,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554996344] [2023-12-21 14:10:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:21,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:22,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:22,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554996344] [2023-12-21 14:10:22,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554996344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:22,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:22,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635523969] [2023-12-21 14:10:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:22,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:22,125 INFO L87 Difference]: Start difference. First operand 4201 states and 6187 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:22,994 INFO L93 Difference]: Finished difference Result 16984 states and 25220 transitions. [2023-12-21 14:10:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:10:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-21 14:10:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:23,009 INFO L225 Difference]: With dead ends: 16984 [2023-12-21 14:10:23,009 INFO L226 Difference]: Without dead ends: 15942 [2023-12-21 14:10:23,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:10:23,015 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1309 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:23,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 2613 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:23,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15942 states. [2023-12-21 14:10:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15942 to 4196. [2023-12-21 14:10:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 4195 states have (on average 1.4710369487485102) internal successors, (6171), 4195 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6171 transitions. [2023-12-21 14:10:23,103 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6171 transitions. Word has length 103 [2023-12-21 14:10:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:23,103 INFO L495 AbstractCegarLoop]: Abstraction has 4196 states and 6171 transitions. [2023-12-21 14:10:23,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6171 transitions. [2023-12-21 14:10:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:10:23,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:23,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 14:10:23,105 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:23,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash 161795784, now seen corresponding path program 1 times [2023-12-21 14:10:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889300178] [2023-12-21 14:10:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:23,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889300178] [2023-12-21 14:10:23,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889300178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:23,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:23,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 14:10:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626215953] [2023-12-21 14:10:23,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:23,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 14:10:23,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 14:10:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-21 14:10:23,997 INFO L87 Difference]: Start difference. First operand 4196 states and 6171 transitions. Second operand has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:26,311 INFO L93 Difference]: Finished difference Result 12968 states and 19191 transitions. [2023-12-21 14:10:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 14:10:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-21 14:10:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:26,321 INFO L225 Difference]: With dead ends: 12968 [2023-12-21 14:10:26,321 INFO L226 Difference]: Without dead ends: 11853 [2023-12-21 14:10:26,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=393, Invalid=1499, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 14:10:26,326 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 2482 mSDsluCounter, 5569 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 6069 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:26,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 6069 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:10:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2023-12-21 14:10:26,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 4177. [2023-12-21 14:10:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 4176 states have (on average 1.4710249042145593) internal successors, (6143), 4176 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 6143 transitions. [2023-12-21 14:10:26,397 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 6143 transitions. Word has length 103 [2023-12-21 14:10:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:26,397 INFO L495 AbstractCegarLoop]: Abstraction has 4177 states and 6143 transitions. [2023-12-21 14:10:26,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.421052631578948) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 6143 transitions. [2023-12-21 14:10:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 14:10:26,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:26,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:26,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 14:10:26,399 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:26,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1067950022, now seen corresponding path program 1 times [2023-12-21 14:10:26,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:26,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219127143] [2023-12-21 14:10:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:26,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:26,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219127143] [2023-12-21 14:10:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219127143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:26,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:26,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 14:10:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102491364] [2023-12-21 14:10:26,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:26,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 14:10:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 14:10:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:10:26,838 INFO L87 Difference]: Start difference. First operand 4177 states and 6143 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:27,465 INFO L93 Difference]: Finished difference Result 16900 states and 25101 transitions. [2023-12-21 14:10:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 14:10:27,466 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-21 14:10:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:27,479 INFO L225 Difference]: With dead ends: 16900 [2023-12-21 14:10:27,479 INFO L226 Difference]: Without dead ends: 15815 [2023-12-21 14:10:27,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2023-12-21 14:10:27,484 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 1206 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:27,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 2020 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15815 states. [2023-12-21 14:10:27,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15815 to 4141. [2023-12-21 14:10:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4140 states have (on average 1.472463768115942) internal successors, (6096), 4140 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6096 transitions. [2023-12-21 14:10:27,577 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6096 transitions. Word has length 103 [2023-12-21 14:10:27,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:27,578 INFO L495 AbstractCegarLoop]: Abstraction has 4141 states and 6096 transitions. [2023-12-21 14:10:27,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6096 transitions. [2023-12-21 14:10:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 14:10:27,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:27,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:27,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 14:10:27,579 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:27,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 316354466, now seen corresponding path program 1 times [2023-12-21 14:10:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608157709] [2023-12-21 14:10:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:28,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608157709] [2023-12-21 14:10:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608157709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:28,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 14:10:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704696912] [2023-12-21 14:10:28,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:28,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 14:10:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:28,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 14:10:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-12-21 14:10:28,335 INFO L87 Difference]: Start difference. First operand 4141 states and 6096 transitions. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:29,969 INFO L93 Difference]: Finished difference Result 34777 states and 51688 transitions. [2023-12-21 14:10:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 14:10:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-21 14:10:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:30,016 INFO L225 Difference]: With dead ends: 34777 [2023-12-21 14:10:30,016 INFO L226 Difference]: Without dead ends: 33695 [2023-12-21 14:10:30,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=315, Invalid=1407, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 14:10:30,034 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2506 mSDsluCounter, 4797 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2506 SdHoareTripleChecker+Valid, 5163 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:30,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2506 Valid, 5163 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 14:10:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33695 states. [2023-12-21 14:10:30,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33695 to 4141. [2023-12-21 14:10:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4140 states have (on average 1.4714975845410627) internal successors, (6092), 4140 states have internal predecessors, (6092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6092 transitions. [2023-12-21 14:10:30,278 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6092 transitions. Word has length 104 [2023-12-21 14:10:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:30,278 INFO L495 AbstractCegarLoop]: Abstraction has 4141 states and 6092 transitions. [2023-12-21 14:10:30,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6092 transitions. [2023-12-21 14:10:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 14:10:30,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:30,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:30,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 14:10:30,283 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:30,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:30,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1658545311, now seen corresponding path program 1 times [2023-12-21 14:10:30,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:30,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847725802] [2023-12-21 14:10:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:30,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:31,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847725802] [2023-12-21 14:10:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847725802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:31,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:31,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 14:10:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911107872] [2023-12-21 14:10:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 14:10:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 14:10:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:10:31,104 INFO L87 Difference]: Start difference. First operand 4141 states and 6092 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:31,964 INFO L93 Difference]: Finished difference Result 5193 states and 7657 transitions. [2023-12-21 14:10:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 14:10:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-21 14:10:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:31,968 INFO L225 Difference]: With dead ends: 5193 [2023-12-21 14:10:31,968 INFO L226 Difference]: Without dead ends: 4101 [2023-12-21 14:10:31,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2023-12-21 14:10:31,971 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 463 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:31,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1733 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:10:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2023-12-21 14:10:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4099. [2023-12-21 14:10:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 4098 states have (on average 1.4738897022938018) internal successors, (6040), 4098 states have internal predecessors, (6040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:32,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 6040 transitions. [2023-12-21 14:10:32,004 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 6040 transitions. Word has length 104 [2023-12-21 14:10:32,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:32,004 INFO L495 AbstractCegarLoop]: Abstraction has 4099 states and 6040 transitions. [2023-12-21 14:10:32,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 6040 transitions. [2023-12-21 14:10:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 14:10:32,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:32,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:32,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 14:10:32,006 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:32,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2111488954, now seen corresponding path program 1 times [2023-12-21 14:10:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:32,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348394616] [2023-12-21 14:10:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:32,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:32,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:32,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348394616] [2023-12-21 14:10:32,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348394616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:32,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:32,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:32,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141407543] [2023-12-21 14:10:32,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:32,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:32,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:32,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:32,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:32,521 INFO L87 Difference]: Start difference. First operand 4099 states and 6040 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:33,361 INFO L93 Difference]: Finished difference Result 16903 states and 25100 transitions. [2023-12-21 14:10:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:10:33,362 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-21 14:10:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:33,376 INFO L225 Difference]: With dead ends: 16903 [2023-12-21 14:10:33,376 INFO L226 Difference]: Without dead ends: 15822 [2023-12-21 14:10:33,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:10:33,382 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1357 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:33,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 2821 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15822 states. [2023-12-21 14:10:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15822 to 4045. [2023-12-21 14:10:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4044 states have (on average 1.4765084075173096) internal successors, (5971), 4044 states have internal predecessors, (5971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 5971 transitions. [2023-12-21 14:10:33,464 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 5971 transitions. Word has length 104 [2023-12-21 14:10:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:33,464 INFO L495 AbstractCegarLoop]: Abstraction has 4045 states and 5971 transitions. [2023-12-21 14:10:33,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 5971 transitions. [2023-12-21 14:10:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 14:10:33,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:33,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:33,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 14:10:33,465 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:33,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1339049245, now seen corresponding path program 1 times [2023-12-21 14:10:33,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:33,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937877016] [2023-12-21 14:10:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:33,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937877016] [2023-12-21 14:10:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937877016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:33,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:33,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:10:33,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774332356] [2023-12-21 14:10:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:33,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:10:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:10:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:10:33,593 INFO L87 Difference]: Start difference. First operand 4045 states and 5971 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:33,633 INFO L93 Difference]: Finished difference Result 9587 states and 14240 transitions. [2023-12-21 14:10:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:10:33,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-21 14:10:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:33,639 INFO L225 Difference]: With dead ends: 9587 [2023-12-21 14:10:33,639 INFO L226 Difference]: Without dead ends: 5699 [2023-12-21 14:10:33,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:10:33,645 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 106 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:33,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 515 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2023-12-21 14:10:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5671. [2023-12-21 14:10:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 5670 states have (on average 1.4730158730158731) internal successors, (8352), 5670 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8352 transitions. [2023-12-21 14:10:33,707 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 8352 transitions. Word has length 104 [2023-12-21 14:10:33,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:33,707 INFO L495 AbstractCegarLoop]: Abstraction has 5671 states and 8352 transitions. [2023-12-21 14:10:33,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 8352 transitions. [2023-12-21 14:10:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 14:10:33,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:33,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 14:10:33,708 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:33,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1696833575, now seen corresponding path program 1 times [2023-12-21 14:10:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:33,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558197050] [2023-12-21 14:10:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:33,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:33,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558197050] [2023-12-21 14:10:33,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558197050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:33,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:33,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:10:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759599396] [2023-12-21 14:10:33,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:33,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:10:33,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:10:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:10:33,885 INFO L87 Difference]: Start difference. First operand 5671 states and 8352 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:33,930 INFO L93 Difference]: Finished difference Result 8851 states and 13032 transitions. [2023-12-21 14:10:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:10:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-21 14:10:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:33,940 INFO L225 Difference]: With dead ends: 8851 [2023-12-21 14:10:33,940 INFO L226 Difference]: Without dead ends: 8849 [2023-12-21 14:10:33,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:10:33,942 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 200 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:33,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 868 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8849 states. [2023-12-21 14:10:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8849 to 5699. [2023-12-21 14:10:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.4654264654264655) internal successors, (8350), 5698 states have internal predecessors, (8350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 8350 transitions. [2023-12-21 14:10:34,022 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 8350 transitions. Word has length 104 [2023-12-21 14:10:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:34,022 INFO L495 AbstractCegarLoop]: Abstraction has 5699 states and 8350 transitions. [2023-12-21 14:10:34,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 8350 transitions. [2023-12-21 14:10:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 14:10:34,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:34,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:34,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 14:10:34,024 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:34,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -865532183, now seen corresponding path program 1 times [2023-12-21 14:10:34,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098321263] [2023-12-21 14:10:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:34,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098321263] [2023-12-21 14:10:34,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098321263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:34,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:34,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:10:34,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129485383] [2023-12-21 14:10:34,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:34,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:10:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:34,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:10:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:34,502 INFO L87 Difference]: Start difference. First operand 5699 states and 8350 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:35,278 INFO L93 Difference]: Finished difference Result 23917 states and 35211 transitions. [2023-12-21 14:10:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:10:35,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-21 14:10:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:35,300 INFO L225 Difference]: With dead ends: 23917 [2023-12-21 14:10:35,300 INFO L226 Difference]: Without dead ends: 22355 [2023-12-21 14:10:35,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:10:35,308 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1085 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:35,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 2539 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22355 states. [2023-12-21 14:10:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22355 to 5670. [2023-12-21 14:10:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5669 states have (on average 1.4663961898041982) internal successors, (8313), 5669 states have internal predecessors, (8313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 8313 transitions. [2023-12-21 14:10:35,453 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 8313 transitions. Word has length 105 [2023-12-21 14:10:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:35,453 INFO L495 AbstractCegarLoop]: Abstraction has 5670 states and 8313 transitions. [2023-12-21 14:10:35,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 8313 transitions. [2023-12-21 14:10:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 14:10:35,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:35,456 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:10:35,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 14:10:35,456 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:35,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:35,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1663528919, now seen corresponding path program 1 times [2023-12-21 14:10:35,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:35,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133312931] [2023-12-21 14:10:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:35,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:35,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:35,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133312931] [2023-12-21 14:10:35,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133312931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:35,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:35,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:10:35,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486023496] [2023-12-21 14:10:35,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:35,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:10:35,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:10:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:35,579 INFO L87 Difference]: Start difference. First operand 5670 states and 8313 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:35,972 INFO L93 Difference]: Finished difference Result 26178 states and 38568 transitions. [2023-12-21 14:10:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:10:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 14:10:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:35,992 INFO L225 Difference]: With dead ends: 26178 [2023-12-21 14:10:35,993 INFO L226 Difference]: Without dead ends: 20636 [2023-12-21 14:10:36,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:10:36,003 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1478 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:36,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 554 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:10:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20636 states. [2023-12-21 14:10:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20636 to 8480. [2023-12-21 14:10:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8480 states, 8479 states have (on average 1.4685694067696662) internal successors, (12452), 8479 states have internal predecessors, (12452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 12452 transitions. [2023-12-21 14:10:36,125 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 12452 transitions. Word has length 136 [2023-12-21 14:10:36,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:36,126 INFO L495 AbstractCegarLoop]: Abstraction has 8480 states and 12452 transitions. [2023-12-21 14:10:36,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 12452 transitions. [2023-12-21 14:10:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 14:10:36,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:36,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:36,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 14:10:36,128 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:36,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 329395456, now seen corresponding path program 1 times [2023-12-21 14:10:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:36,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802040425] [2023-12-21 14:10:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:36,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:36,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:36,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802040425] [2023-12-21 14:10:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802040425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:36,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:36,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:10:36,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373834956] [2023-12-21 14:10:36,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:36,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:10:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:10:36,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:36,263 INFO L87 Difference]: Start difference. First operand 8480 states and 12452 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:36,592 INFO L93 Difference]: Finished difference Result 44760 states and 65700 transitions. [2023-12-21 14:10:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:10:36,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 14:10:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:36,631 INFO L225 Difference]: With dead ends: 44760 [2023-12-21 14:10:36,631 INFO L226 Difference]: Without dead ends: 36444 [2023-12-21 14:10:36,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:10:36,650 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1707 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:36,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 444 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36444 states. [2023-12-21 14:10:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36444 to 17954. [2023-12-21 14:10:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17954 states, 17953 states have (on average 1.4673313652314377) internal successors, (26343), 17953 states have internal predecessors, (26343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17954 states to 17954 states and 26343 transitions. [2023-12-21 14:10:36,906 INFO L78 Accepts]: Start accepts. Automaton has 17954 states and 26343 transitions. Word has length 136 [2023-12-21 14:10:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:36,906 INFO L495 AbstractCegarLoop]: Abstraction has 17954 states and 26343 transitions. [2023-12-21 14:10:36,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 17954 states and 26343 transitions. [2023-12-21 14:10:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 14:10:36,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:36,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:36,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 14:10:36,909 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:36,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:36,910 INFO L85 PathProgramCache]: Analyzing trace with hash 838163590, now seen corresponding path program 1 times [2023-12-21 14:10:36,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:36,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533976862] [2023-12-21 14:10:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:36,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533976862] [2023-12-21 14:10:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533976862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:37,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:10:37,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469545257] [2023-12-21 14:10:37,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:37,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:10:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:10:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:37,036 INFO L87 Difference]: Start difference. First operand 17954 states and 26343 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:37,461 INFO L93 Difference]: Finished difference Result 90506 states and 132371 transitions. [2023-12-21 14:10:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:10:37,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 14:10:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:37,552 INFO L225 Difference]: With dead ends: 90506 [2023-12-21 14:10:37,552 INFO L226 Difference]: Without dead ends: 72716 [2023-12-21 14:10:37,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:10:37,583 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1540 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:37,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 448 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72716 states. [2023-12-21 14:10:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72716 to 38062. [2023-12-21 14:10:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38062 states, 38061 states have (on average 1.4647276739970048) internal successors, (55749), 38061 states have internal predecessors, (55749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38062 states to 38062 states and 55749 transitions. [2023-12-21 14:10:38,194 INFO L78 Accepts]: Start accepts. Automaton has 38062 states and 55749 transitions. Word has length 136 [2023-12-21 14:10:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:38,194 INFO L495 AbstractCegarLoop]: Abstraction has 38062 states and 55749 transitions. [2023-12-21 14:10:38,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 38062 states and 55749 transitions. [2023-12-21 14:10:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 14:10:38,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:38,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:38,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 14:10:38,199 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:38,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:38,199 INFO L85 PathProgramCache]: Analyzing trace with hash -775535366, now seen corresponding path program 1 times [2023-12-21 14:10:38,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:38,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585968557] [2023-12-21 14:10:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:38,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585968557] [2023-12-21 14:10:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585968557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:38,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:38,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:10:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402322233] [2023-12-21 14:10:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:38,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:10:38,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:10:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:38,319 INFO L87 Difference]: Start difference. First operand 38062 states and 55749 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:38,984 INFO L93 Difference]: Finished difference Result 171710 states and 251213 transitions. [2023-12-21 14:10:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:10:38,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 14:10:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:39,515 INFO L225 Difference]: With dead ends: 171710 [2023-12-21 14:10:39,515 INFO L226 Difference]: Without dead ends: 133812 [2023-12-21 14:10:39,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:10:39,582 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1882 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:39,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1882 Valid, 438 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133812 states. [2023-12-21 14:10:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133812 to 80598. [2023-12-21 14:10:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80598 states, 80597 states have (on average 1.4617045299452833) internal successors, (117809), 80597 states have internal predecessors, (117809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80598 states to 80598 states and 117809 transitions. [2023-12-21 14:10:40,786 INFO L78 Accepts]: Start accepts. Automaton has 80598 states and 117809 transitions. Word has length 136 [2023-12-21 14:10:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:40,786 INFO L495 AbstractCegarLoop]: Abstraction has 80598 states and 117809 transitions. [2023-12-21 14:10:40,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 80598 states and 117809 transitions. [2023-12-21 14:10:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 14:10:40,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:40,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:40,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 14:10:40,791 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:40,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -715938700, now seen corresponding path program 1 times [2023-12-21 14:10:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987555048] [2023-12-21 14:10:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:41,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:41,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987555048] [2023-12-21 14:10:41,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987555048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:41,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:41,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:10:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554208816] [2023-12-21 14:10:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:10:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:10:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:41,165 INFO L87 Difference]: Start difference. First operand 80598 states and 117809 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:42,582 INFO L93 Difference]: Finished difference Result 375726 states and 548637 transitions. [2023-12-21 14:10:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:10:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 14:10:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:43,152 INFO L225 Difference]: With dead ends: 375726 [2023-12-21 14:10:43,152 INFO L226 Difference]: Without dead ends: 295292 [2023-12-21 14:10:43,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:10:43,220 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2050 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:43,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 434 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:10:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295292 states. [2023-12-21 14:10:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295292 to 170310. [2023-12-21 14:10:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170310 states, 170309 states have (on average 1.4586721782172405) internal successors, (248425), 170309 states have internal predecessors, (248425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170310 states to 170310 states and 248425 transitions. [2023-12-21 14:10:46,162 INFO L78 Accepts]: Start accepts. Automaton has 170310 states and 248425 transitions. Word has length 136 [2023-12-21 14:10:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:46,162 INFO L495 AbstractCegarLoop]: Abstraction has 170310 states and 248425 transitions. [2023-12-21 14:10:46,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 170310 states and 248425 transitions. [2023-12-21 14:10:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 14:10:46,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:46,167 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:10:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 14:10:46,167 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:46,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1724119051, now seen corresponding path program 1 times [2023-12-21 14:10:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516771931] [2023-12-21 14:10:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:46,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516771931] [2023-12-21 14:10:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516771931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:46,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:46,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483903365] [2023-12-21 14:10:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:46,276 INFO L87 Difference]: Start difference. First operand 170310 states and 248425 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:47,612 INFO L93 Difference]: Finished difference Result 300842 states and 438987 transitions. [2023-12-21 14:10:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:47,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 14:10:47,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:47,826 INFO L225 Difference]: With dead ends: 300842 [2023-12-21 14:10:47,826 INFO L226 Difference]: Without dead ends: 165030 [2023-12-21 14:10:48,121 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 [2023-12-21 14:10:48,122 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 99 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:48,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 469 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165030 states. [2023-12-21 14:10:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165030 to 165028. [2023-12-21 14:10:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165028 states, 165027 states have (on average 1.4500718064316749) internal successors, (239301), 165027 states have internal predecessors, (239301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165028 states to 165028 states and 239301 transitions. [2023-12-21 14:10:50,455 INFO L78 Accepts]: Start accepts. Automaton has 165028 states and 239301 transitions. Word has length 136 [2023-12-21 14:10:50,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:50,455 INFO L495 AbstractCegarLoop]: Abstraction has 165028 states and 239301 transitions. [2023-12-21 14:10:50,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 165028 states and 239301 transitions. [2023-12-21 14:10:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 14:10:50,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:50,482 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:50,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 14:10:50,483 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:50,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1955298378, now seen corresponding path program 1 times [2023-12-21 14:10:50,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:50,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515823029] [2023-12-21 14:10:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 14:10:50,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:50,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515823029] [2023-12-21 14:10:50,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515823029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:50,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:50,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:50,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803623833] [2023-12-21 14:10:50,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:50,622 INFO L87 Difference]: Start difference. First operand 165028 states and 239301 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:51,629 INFO L93 Difference]: Finished difference Result 320104 states and 463511 transitions. [2023-12-21 14:10:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 167 [2023-12-21 14:10:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:52,177 INFO L225 Difference]: With dead ends: 320104 [2023-12-21 14:10:52,178 INFO L226 Difference]: Without dead ends: 155232 [2023-12-21 14:10:52,258 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 [2023-12-21 14:10:52,259 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 95 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:52,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 459 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155232 states. [2023-12-21 14:10:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155232 to 152338. [2023-12-21 14:10:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152338 states, 152337 states have (on average 1.439939082429088) internal successors, (219356), 152337 states have internal predecessors, (219356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152338 states to 152338 states and 219356 transitions. [2023-12-21 14:10:54,399 INFO L78 Accepts]: Start accepts. Automaton has 152338 states and 219356 transitions. Word has length 167 [2023-12-21 14:10:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:54,400 INFO L495 AbstractCegarLoop]: Abstraction has 152338 states and 219356 transitions. [2023-12-21 14:10:54,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 152338 states and 219356 transitions. [2023-12-21 14:10:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-21 14:10:54,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:54,419 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:54,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 14:10:54,420 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:54,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -870417400, now seen corresponding path program 1 times [2023-12-21 14:10:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:54,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091630193] [2023-12-21 14:10:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 14:10:54,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091630193] [2023-12-21 14:10:54,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091630193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:54,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:54,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:54,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551812051] [2023-12-21 14:10:54,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:54,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:54,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:54,531 INFO L87 Difference]: Start difference. First operand 152338 states and 219356 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:55,483 INFO L93 Difference]: Finished difference Result 294790 states and 423710 transitions. [2023-12-21 14:10:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:55,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 168 [2023-12-21 14:10:55,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:56,013 INFO L225 Difference]: With dead ends: 294790 [2023-12-21 14:10:56,014 INFO L226 Difference]: Without dead ends: 142596 [2023-12-21 14:10:56,086 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 [2023-12-21 14:10:56,089 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 88 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:56,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 460 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142596 states. [2023-12-21 14:10:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142596 to 139810. [2023-12-21 14:10:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139810 states, 139809 states have (on average 1.4295789255341216) internal successors, (199868), 139809 states have internal predecessors, (199868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139810 states to 139810 states and 199868 transitions. [2023-12-21 14:10:58,115 INFO L78 Accepts]: Start accepts. Automaton has 139810 states and 199868 transitions. Word has length 168 [2023-12-21 14:10:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:58,115 INFO L495 AbstractCegarLoop]: Abstraction has 139810 states and 199868 transitions. [2023-12-21 14:10:58,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 139810 states and 199868 transitions. [2023-12-21 14:10:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 14:10:58,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:58,162 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:58,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 14:10:58,176 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:58,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:58,176 INFO L85 PathProgramCache]: Analyzing trace with hash 14373583, now seen corresponding path program 1 times [2023-12-21 14:10:58,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:58,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810621252] [2023-12-21 14:10:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:58,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 14:10:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:58,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810621252] [2023-12-21 14:10:58,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810621252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:58,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:58,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:58,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852491690] [2023-12-21 14:10:58,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:58,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:58,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:58,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:58,336 INFO L87 Difference]: Start difference. First operand 139810 states and 199868 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:10:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:59,329 INFO L93 Difference]: Finished difference Result 269734 states and 384734 transitions. [2023-12-21 14:10:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-21 14:10:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:59,506 INFO L225 Difference]: With dead ends: 269734 [2023-12-21 14:10:59,507 INFO L226 Difference]: Without dead ends: 130068 [2023-12-21 14:10:59,586 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 [2023-12-21 14:10:59,587 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 81 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:59,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 461 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130068 states. [2023-12-21 14:11:00,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130068 to 127282. [2023-12-21 14:11:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127282 states, 127281 states have (on average 1.417179311916154) internal successors, (180380), 127281 states have internal predecessors, (180380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127282 states to 127282 states and 180380 transitions. [2023-12-21 14:11:01,174 INFO L78 Accepts]: Start accepts. Automaton has 127282 states and 180380 transitions. Word has length 169 [2023-12-21 14:11:01,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:01,175 INFO L495 AbstractCegarLoop]: Abstraction has 127282 states and 180380 transitions. [2023-12-21 14:11:01,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 127282 states and 180380 transitions. [2023-12-21 14:11:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-21 14:11:01,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:01,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 14:11:01,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 14:11:01,187 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:01,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1349895050, now seen corresponding path program 1 times [2023-12-21 14:11:01,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:01,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814007428] [2023-12-21 14:11:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:01,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 14:11:01,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:01,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814007428] [2023-12-21 14:11:01,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814007428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:01,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:01,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:01,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754338160] [2023-12-21 14:11:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:01,724 INFO L87 Difference]: Start difference. First operand 127282 states and 180380 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:02,588 INFO L93 Difference]: Finished difference Result 244678 states and 345758 transitions. [2023-12-21 14:11:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:02,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 170 [2023-12-21 14:11:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:02,755 INFO L225 Difference]: With dead ends: 244678 [2023-12-21 14:11:02,756 INFO L226 Difference]: Without dead ends: 117540 [2023-12-21 14:11:02,824 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 [2023-12-21 14:11:02,825 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 74 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:02,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 462 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117540 states. [2023-12-21 14:11:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117540 to 114754. [2023-12-21 14:11:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114754 states, 114753 states have (on average 1.4020722769775082) internal successors, (160892), 114753 states have internal predecessors, (160892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114754 states to 114754 states and 160892 transitions. [2023-12-21 14:11:04,364 INFO L78 Accepts]: Start accepts. Automaton has 114754 states and 160892 transitions. Word has length 170 [2023-12-21 14:11:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:04,364 INFO L495 AbstractCegarLoop]: Abstraction has 114754 states and 160892 transitions. [2023-12-21 14:11:04,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 114754 states and 160892 transitions. [2023-12-21 14:11:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 14:11:04,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:04,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 14:11:04,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 14:11:04,373 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:04,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1784228645, now seen corresponding path program 1 times [2023-12-21 14:11:04,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:04,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366585374] [2023-12-21 14:11:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:04,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 14:11:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366585374] [2023-12-21 14:11:04,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366585374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:04,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:04,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329821778] [2023-12-21 14:11:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:04,487 INFO L87 Difference]: Start difference. First operand 114754 states and 160892 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:05,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:05,940 INFO L93 Difference]: Finished difference Result 333766 states and 465662 transitions. [2023-12-21 14:11:05,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:05,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 171 [2023-12-21 14:11:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:06,347 INFO L225 Difference]: With dead ends: 333766 [2023-12-21 14:11:06,347 INFO L226 Difference]: Without dead ends: 219156 [2023-12-21 14:11:06,448 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 [2023-12-21 14:11:06,450 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 67 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:06,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 463 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219156 states. [2023-12-21 14:11:08,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219156 to 206162. [2023-12-21 14:11:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206162 states, 206161 states have (on average 1.3890309030320962) internal successors, (286364), 206161 states have internal predecessors, (286364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206162 states to 206162 states and 286364 transitions. [2023-12-21 14:11:09,728 INFO L78 Accepts]: Start accepts. Automaton has 206162 states and 286364 transitions. Word has length 171 [2023-12-21 14:11:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:09,728 INFO L495 AbstractCegarLoop]: Abstraction has 206162 states and 286364 transitions. [2023-12-21 14:11:09,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 206162 states and 286364 transitions. [2023-12-21 14:11:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:11:09,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:09,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 14:11:09,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 14:11:09,740 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:09,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:09,765 INFO L85 PathProgramCache]: Analyzing trace with hash 403780619, now seen corresponding path program 1 times [2023-12-21 14:11:09,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:09,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736094329] [2023-12-21 14:11:09,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:09,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:09,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736094329] [2023-12-21 14:11:09,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736094329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:09,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:09,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:09,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045673074] [2023-12-21 14:11:09,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:09,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:09,890 INFO L87 Difference]: Start difference. First operand 206162 states and 286364 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:11,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:11,028 INFO L93 Difference]: Finished difference Result 360748 states and 500067 transitions. [2023-12-21 14:11:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:11,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2023-12-21 14:11:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:11,236 INFO L225 Difference]: With dead ends: 360748 [2023-12-21 14:11:11,236 INFO L226 Difference]: Without dead ends: 154730 [2023-12-21 14:11:11,348 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 [2023-12-21 14:11:11,350 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 97 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:11,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 433 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154730 states. [2023-12-21 14:11:13,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154730 to 152872. [2023-12-21 14:11:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152872 states, 152871 states have (on average 1.3712934434915713) internal successors, (209631), 152871 states have internal predecessors, (209631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152872 states to 152872 states and 209631 transitions. [2023-12-21 14:11:13,412 INFO L78 Accepts]: Start accepts. Automaton has 152872 states and 209631 transitions. Word has length 172 [2023-12-21 14:11:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:13,412 INFO L495 AbstractCegarLoop]: Abstraction has 152872 states and 209631 transitions. [2023-12-21 14:11:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:13,412 INFO L276 IsEmpty]: Start isEmpty. Operand 152872 states and 209631 transitions. [2023-12-21 14:11:13,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:11:13,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:13,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 14:11:13,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 14:11:13,418 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:13,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1311099945, now seen corresponding path program 1 times [2023-12-21 14:11:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:13,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539191920] [2023-12-21 14:11:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:13,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:14,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539191920] [2023-12-21 14:11:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539191920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:11:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716593357] [2023-12-21 14:11:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:14,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:11:14,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:11:14,253 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) [2023-12-21 14:11:14,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 14:11:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:14,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 14:11:14,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:11:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 14:11:15,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:11:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 14:11:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716593357] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:11:15,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:11:15,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 23 [2023-12-21 14:11:15,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758440849] [2023-12-21 14:11:15,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:11:15,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 14:11:15,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 14:11:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2023-12-21 14:11:15,773 INFO L87 Difference]: Start difference. First operand 152872 states and 209631 transitions. Second operand has 23 states, 23 states have (on average 21.434782608695652) internal successors, (493), 23 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:11:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:44,217 INFO L93 Difference]: Finished difference Result 2765514 states and 3785449 transitions. [2023-12-21 14:11:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2023-12-21 14:11:44,218 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 21.434782608695652) internal successors, (493), 23 states have internal predecessors, (493), 0 states have call successors, (0), 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 172 [2023-12-21 14:11:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:49,642 INFO L225 Difference]: With dead ends: 2765514 [2023-12-21 14:11:49,642 INFO L226 Difference]: Without dead ends: 2544060 [2023-12-21 14:11:50,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37079 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=11100, Invalid=70982, Unknown=0, NotChecked=0, Total=82082 [2023-12-21 14:11:50,621 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 17680 mSDsluCounter, 4105 mSDsCounter, 0 mSdLazyCounter, 6631 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17680 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 6924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 6631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:50,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17680 Valid, 4555 Invalid, 6924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 6631 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-21 14:11:52,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544060 states. [2023-12-21 14:12:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544060 to 1214650. [2023-12-21 14:12:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214650 states, 1214649 states have (on average 1.3671760319236257) internal successors, (1660639), 1214649 states have internal predecessors, (1660639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:12:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214650 states to 1214650 states and 1660639 transitions. [2023-12-21 14:12:29,205 INFO L78 Accepts]: Start accepts. Automaton has 1214650 states and 1660639 transitions. Word has length 172 [2023-12-21 14:12:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:29,205 INFO L495 AbstractCegarLoop]: Abstraction has 1214650 states and 1660639 transitions. [2023-12-21 14:12:29,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.434782608695652) internal successors, (493), 23 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:12:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1214650 states and 1660639 transitions. [2023-12-21 14:12:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 14:12:29,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:29,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:29,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 14:12:29,449 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,SelfDestructingSolverStorable46 [2023-12-21 14:12:29,450 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:29,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:29,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2137447207, now seen corresponding path program 1 times [2023-12-21 14:12:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:29,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14498985] [2023-12-21 14:12:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:30,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14498985] [2023-12-21 14:12:30,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14498985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:12:30,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580796551] [2023-12-21 14:12:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:30,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:12:30,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:12:30,267 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) [2023-12-21 14:12:30,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 14:12:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:30,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 14:12:30,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:12:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:32,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:12:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:34,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580796551] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:12:34,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:12:34,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-21 14:12:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569853830] [2023-12-21 14:12:34,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:12:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 14:12:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:34,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 14:12:34,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-21 14:12:34,519 INFO L87 Difference]: Start difference. First operand 1214650 states and 1660639 transitions. Second operand has 32 states, 32 states have (on average 15.84375) internal successors, (507), 31 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)