/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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:30:39,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:30:40,041 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 13:30:40,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:30:40,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:30:40,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:30:40,073 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:30:40,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:30:40,074 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:30:40,074 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:30:40,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:30:40,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:30:40,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:30:40,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:30:40,075 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:30:40,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:30:40,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:30:40,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:30:40,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:30:40,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:30:40,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:30:40,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:30:40,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:30:40,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:30:40,090 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:30:40,090 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:30:40,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:30:40,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:30:40,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:30:40,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:30:40,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:30:40,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:30:40,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:30:40,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:30:40,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:30:40,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:30:40,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:30:40,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:30:40,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:30:40,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:30:40,093 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:30:40,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:30:40,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:30:40,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:30:40,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:30:40,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:30:40,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:30:40,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:30:40,304 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:30:40,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 13:30:41,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:30:41,581 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:30:41,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 13:30:41,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465f3be1a/6d7351095e7b4dff8c5bb8946d7ceaec/FLAG36bd1fd1a [2023-12-21 13:30:41,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465f3be1a/6d7351095e7b4dff8c5bb8946d7ceaec [2023-12-21 13:30:41,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:30:41,602 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:30:41,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:30:41,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:30:41,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:30:41,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:41,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c72fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41, skipping insertion in model container [2023-12-21 13:30:41,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:41,652 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:30:41,794 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2023-12-21 13:30:41,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:30:41,838 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:30:41,871 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-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2023-12-21 13:30:41,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:30:41,913 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:30:41,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41 WrapperNode [2023-12-21 13:30:41,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:30:41,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:30:41,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:30:41,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:30:41,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:41,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:41,981 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 713 [2023-12-21 13:30:41,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:30:41,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:30:41,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:30:41,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:30:41,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:41,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,002 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,026 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 13:30:42,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:30:42,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:30:42,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:30:42,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:30:42,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (1/1) ... [2023-12-21 13:30:42,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:30:42,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:30:42,073 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 13:30:42,077 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 13:30:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:30:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:30:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:30:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:30:42,223 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:30:42,224 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:30:42,681 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:30:42,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:30:42,703 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:30:42,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:30:42 BoogieIcfgContainer [2023-12-21 13:30:42,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:30:42,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:30:42,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:30:42,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:30:42,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:30:41" (1/3) ... [2023-12-21 13:30:42,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2427064f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:30:42, skipping insertion in model container [2023-12-21 13:30:42,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:30:41" (2/3) ... [2023-12-21 13:30:42,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2427064f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:30:42, skipping insertion in model container [2023-12-21 13:30:42,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:30:42" (3/3) ... [2023-12-21 13:30:42,709 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 13:30:42,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:30:42,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:30:42,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:30:42,759 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;@547cc3c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:30:42,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:30:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 175 states have (on average 1.7257142857142858) internal successors, (302), 176 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 13:30:42,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:30:42,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:42,770 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] [2023-12-21 13:30:42,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:42,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1323163456, now seen corresponding path program 1 times [2023-12-21 13:30:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591694439] [2023-12-21 13:30:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:42,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:43,226 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 13:30:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591694439] [2023-12-21 13:30:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591694439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:43,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:43,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:30:43,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851839767] [2023-12-21 13:30:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:43,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:30:43,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:30:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:30:43,257 INFO L87 Difference]: Start difference. First operand has 177 states, 175 states have (on average 1.7257142857142858) internal successors, (302), 176 states have internal predecessors, (302), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:30:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:43,437 INFO L93 Difference]: Finished difference Result 632 states and 1027 transitions. [2023-12-21 13:30:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:30:43,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 13:30:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:43,459 INFO L225 Difference]: With dead ends: 632 [2023-12-21 13:30:43,459 INFO L226 Difference]: Without dead ends: 539 [2023-12-21 13:30:43,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:43,465 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1594 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:43,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1095 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:30:43,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-21 13:30:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 273. [2023-12-21 13:30:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5147058823529411) internal successors, (412), 272 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 13:30:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 412 transitions. [2023-12-21 13:30:43,504 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 412 transitions. Word has length 63 [2023-12-21 13:30:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:43,505 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 412 transitions. [2023-12-21 13:30:43,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 13:30:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 412 transitions. [2023-12-21 13:30:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:30:43,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:43,507 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] [2023-12-21 13:30:43,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:30:43,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:43,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1651716700, now seen corresponding path program 1 times [2023-12-21 13:30:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:43,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619857890] [2023-12-21 13:30:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:43,730 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 13:30:43,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:43,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619857890] [2023-12-21 13:30:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619857890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:43,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:30:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667148238] [2023-12-21 13:30:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:43,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:30:43,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:43,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:30:43,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:30:43,738 INFO L87 Difference]: Start difference. First operand 273 states and 412 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 13:30:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:43,863 INFO L93 Difference]: Finished difference Result 1011 states and 1564 transitions. [2023-12-21 13:30:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:30:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-21 13:30:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:43,867 INFO L225 Difference]: With dead ends: 1011 [2023-12-21 13:30:43,867 INFO L226 Difference]: Without dead ends: 799 [2023-12-21 13:30:43,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:30:43,871 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 841 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:43,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 851 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:30:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-21 13:30:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 793. [2023-12-21 13:30:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.5366161616161615) internal successors, (1217), 792 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 13:30:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1217 transitions. [2023-12-21 13:30:43,909 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1217 transitions. Word has length 64 [2023-12-21 13:30:43,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:43,910 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1217 transitions. [2023-12-21 13:30:43,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 13:30:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1217 transitions. [2023-12-21 13:30:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:30:43,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:43,912 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] [2023-12-21 13:30:43,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:30:43,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:43,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:43,913 INFO L85 PathProgramCache]: Analyzing trace with hash -61672826, now seen corresponding path program 1 times [2023-12-21 13:30:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:43,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7632851] [2023-12-21 13:30:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:43,998 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 13:30:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7632851] [2023-12-21 13:30:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7632851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:43,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:43,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:30:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656777542] [2023-12-21 13:30:43,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:43,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:44,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:44,000 INFO L87 Difference]: Start difference. First operand 793 states and 1217 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:44,174 INFO L93 Difference]: Finished difference Result 2125 states and 3303 transitions. [2023-12-21 13:30:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:30:44,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-21 13:30:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:44,180 INFO L225 Difference]: With dead ends: 2125 [2023-12-21 13:30:44,180 INFO L226 Difference]: Without dead ends: 1381 [2023-12-21 13:30:44,183 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 13:30:44,186 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1001 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:44,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 244 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:30:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2023-12-21 13:30:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1379. [2023-12-21 13:30:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1378 states have (on average 1.5457184325108853) internal successors, (2130), 1378 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 13:30:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2130 transitions. [2023-12-21 13:30:44,212 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2130 transitions. Word has length 65 [2023-12-21 13:30:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:44,214 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 2130 transitions. [2023-12-21 13:30:44,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2130 transitions. [2023-12-21 13:30:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:30:44,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:44,221 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] [2023-12-21 13:30:44,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:30:44,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:44,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1309679336, now seen corresponding path program 1 times [2023-12-21 13:30:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:44,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691768143] [2023-12-21 13:30:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:44,338 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 13:30:44,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691768143] [2023-12-21 13:30:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691768143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:30:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744213029] [2023-12-21 13:30:44,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:44,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:44,341 INFO L87 Difference]: Start difference. First operand 1379 states and 2130 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:44,493 INFO L93 Difference]: Finished difference Result 3711 states and 5788 transitions. [2023-12-21 13:30:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:30:44,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-21 13:30:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:44,500 INFO L225 Difference]: With dead ends: 3711 [2023-12-21 13:30:44,501 INFO L226 Difference]: Without dead ends: 2431 [2023-12-21 13:30:44,503 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 13:30:44,507 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 927 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:44,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 250 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:30:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-12-21 13:30:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2429. [2023-12-21 13:30:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2428 states have (on average 1.5502471169686984) internal successors, (3764), 2428 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states 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 13:30:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3764 transitions. [2023-12-21 13:30:44,579 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3764 transitions. Word has length 65 [2023-12-21 13:30:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:44,580 INFO L495 AbstractCegarLoop]: Abstraction has 2429 states and 3764 transitions. [2023-12-21 13:30:44,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3764 transitions. [2023-12-21 13:30:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:30:44,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:44,581 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] [2023-12-21 13:30:44,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:30:44,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:44,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:44,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1039716905, now seen corresponding path program 1 times [2023-12-21 13:30:44,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:44,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814595665] [2023-12-21 13:30:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:44,657 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 13:30:44,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:44,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814595665] [2023-12-21 13:30:44,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814595665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:44,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:44,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:30:44,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413939176] [2023-12-21 13:30:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:44,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:44,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:44,659 INFO L87 Difference]: Start difference. First operand 2429 states and 3764 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:44,816 INFO L93 Difference]: Finished difference Result 6932 states and 10799 transitions. [2023-12-21 13:30:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:30:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-21 13:30:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:44,831 INFO L225 Difference]: With dead ends: 6932 [2023-12-21 13:30:44,831 INFO L226 Difference]: Without dead ends: 4575 [2023-12-21 13:30:44,836 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 13:30:44,837 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 953 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:44,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 248 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:30:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2023-12-21 13:30:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4573. [2023-12-21 13:30:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 1.5485564304461943) internal successors, (7080), 4572 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states 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 13:30:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7080 transitions. [2023-12-21 13:30:44,912 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7080 transitions. Word has length 65 [2023-12-21 13:30:44,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:44,913 INFO L495 AbstractCegarLoop]: Abstraction has 4573 states and 7080 transitions. [2023-12-21 13:30:44,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7080 transitions. [2023-12-21 13:30:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 13:30:44,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:44,915 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] [2023-12-21 13:30:44,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:30:44,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:44,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:44,916 INFO L85 PathProgramCache]: Analyzing trace with hash 641592565, now seen corresponding path program 1 times [2023-12-21 13:30:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85467002] [2023-12-21 13:30:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:44,996 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 13:30:44,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:44,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85467002] [2023-12-21 13:30:44,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85467002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:44,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:44,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:30:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101849177] [2023-12-21 13:30:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:44,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:44,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:44,998 INFO L87 Difference]: Start difference. First operand 4573 states and 7080 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:45,186 INFO L93 Difference]: Finished difference Result 12539 states and 19465 transitions. [2023-12-21 13:30:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:30:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-21 13:30:45,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:45,210 INFO L225 Difference]: With dead ends: 12539 [2023-12-21 13:30:45,210 INFO L226 Difference]: Without dead ends: 7999 [2023-12-21 13:30:45,217 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 13:30:45,218 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1015 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:45,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 242 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:30:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2023-12-21 13:30:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 7997. [2023-12-21 13:30:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7997 states, 7996 states have (on average 1.539144572286143) internal successors, (12307), 7996 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states 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 13:30:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7997 states to 7997 states and 12307 transitions. [2023-12-21 13:30:45,400 INFO L78 Accepts]: Start accepts. Automaton has 7997 states and 12307 transitions. Word has length 65 [2023-12-21 13:30:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:45,401 INFO L495 AbstractCegarLoop]: Abstraction has 7997 states and 12307 transitions. [2023-12-21 13:30:45,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:30:45,401 INFO L276 IsEmpty]: Start isEmpty. Operand 7997 states and 12307 transitions. [2023-12-21 13:30:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:30:45,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:45,402 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] [2023-12-21 13:30:45,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:30:45,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:45,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash 727550024, now seen corresponding path program 1 times [2023-12-21 13:30:45,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:45,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326926476] [2023-12-21 13:30:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:45,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:45,547 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 13:30:45,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:45,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326926476] [2023-12-21 13:30:45,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326926476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:45,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:30:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193724912] [2023-12-21 13:30:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:45,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:45,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:45,549 INFO L87 Difference]: Start difference. First operand 7997 states and 12307 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:30:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:45,620 INFO L93 Difference]: Finished difference Result 15647 states and 24028 transitions. [2023-12-21 13:30:45,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:30:45,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-21 13:30:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:45,667 INFO L225 Difference]: With dead ends: 15647 [2023-12-21 13:30:45,667 INFO L226 Difference]: Without dead ends: 15645 [2023-12-21 13:30:45,674 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 13:30:45,675 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 246 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:45,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 982 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15645 states. [2023-12-21 13:30:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15645 to 8221. [2023-12-21 13:30:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8221 states, 8220 states have (on average 1.5244525547445256) internal successors, (12531), 8220 states have internal predecessors, (12531), 0 states have call successors, (0), 0 states 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 13:30:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8221 states to 8221 states and 12531 transitions. [2023-12-21 13:30:45,885 INFO L78 Accepts]: Start accepts. Automaton has 8221 states and 12531 transitions. Word has length 66 [2023-12-21 13:30:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:45,886 INFO L495 AbstractCegarLoop]: Abstraction has 8221 states and 12531 transitions. [2023-12-21 13:30:45,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 13:30:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8221 states and 12531 transitions. [2023-12-21 13:30:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:30:45,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:45,888 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] [2023-12-21 13:30:45,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:30:45,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:45,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1358621374, now seen corresponding path program 1 times [2023-12-21 13:30:45,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:45,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418557529] [2023-12-21 13:30:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:45,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:46,157 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 13:30:46,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:46,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418557529] [2023-12-21 13:30:46,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418557529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:46,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:30:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416153870] [2023-12-21 13:30:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:46,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:30:46,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:30:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:46,159 INFO L87 Difference]: Start difference. First operand 8221 states and 12531 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:47,254 INFO L93 Difference]: Finished difference Result 39232 states and 59316 transitions. [2023-12-21 13:30:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:30:47,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-21 13:30:47,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:47,312 INFO L225 Difference]: With dead ends: 39232 [2023-12-21 13:30:47,312 INFO L226 Difference]: Without dead ends: 33418 [2023-12-21 13:30:47,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:30:47,334 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 2183 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:47,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 1149 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:30:47,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33418 states. [2023-12-21 13:30:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33418 to 8354. [2023-12-21 13:30:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8354 states, 8353 states have (on average 1.5211301328863882) internal successors, (12706), 8353 states have internal predecessors, (12706), 0 states have call successors, (0), 0 states 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 13:30:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 12706 transitions. [2023-12-21 13:30:47,689 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 12706 transitions. Word has length 67 [2023-12-21 13:30:47,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:47,690 INFO L495 AbstractCegarLoop]: Abstraction has 8354 states and 12706 transitions. [2023-12-21 13:30:47,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:47,690 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 12706 transitions. [2023-12-21 13:30:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:30:47,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:47,692 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] [2023-12-21 13:30:47,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:30:47,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:47,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash 984808062, now seen corresponding path program 1 times [2023-12-21 13:30:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445274649] [2023-12-21 13:30:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:47,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:47,917 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 13:30:47,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:47,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445274649] [2023-12-21 13:30:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445274649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:47,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:47,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:30:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815962184] [2023-12-21 13:30:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:47,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:30:47,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:30:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:47,919 INFO L87 Difference]: Start difference. First operand 8354 states and 12706 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:48,802 INFO L93 Difference]: Finished difference Result 22873 states and 34566 transitions. [2023-12-21 13:30:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:30:48,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-21 13:30:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:48,832 INFO L225 Difference]: With dead ends: 22873 [2023-12-21 13:30:48,833 INFO L226 Difference]: Without dead ends: 21566 [2023-12-21 13:30:48,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:30:48,844 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 1685 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:48,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 1307 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:30:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21566 states. [2023-12-21 13:30:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21566 to 8354. [2023-12-21 13:30:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8354 states, 8353 states have (on average 1.5208906979528314) internal successors, (12704), 8353 states have internal predecessors, (12704), 0 states have call successors, (0), 0 states 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 13:30:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 12704 transitions. [2023-12-21 13:30:49,063 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 12704 transitions. Word has length 67 [2023-12-21 13:30:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:49,064 INFO L495 AbstractCegarLoop]: Abstraction has 8354 states and 12704 transitions. [2023-12-21 13:30:49,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 12704 transitions. [2023-12-21 13:30:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:30:49,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:49,066 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] [2023-12-21 13:30:49,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:30:49,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:49,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:49,067 INFO L85 PathProgramCache]: Analyzing trace with hash -838054242, now seen corresponding path program 1 times [2023-12-21 13:30:49,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:49,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525588071] [2023-12-21 13:30:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:49,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:49,305 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 13:30:49,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:49,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525588071] [2023-12-21 13:30:49,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525588071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:49,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:49,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:30:49,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420732206] [2023-12-21 13:30:49,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:49,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:30:49,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:30:49,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:49,307 INFO L87 Difference]: Start difference. First operand 8354 states and 12704 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:50,371 INFO L93 Difference]: Finished difference Result 34360 states and 51927 transitions. [2023-12-21 13:30:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:30:50,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-21 13:30:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:50,412 INFO L225 Difference]: With dead ends: 34360 [2023-12-21 13:30:50,413 INFO L226 Difference]: Without dead ends: 30783 [2023-12-21 13:30:50,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:30:50,424 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1521 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:50,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1724 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:30:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30783 states. [2023-12-21 13:30:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30783 to 8577. [2023-12-21 13:30:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8577 states, 8576 states have (on average 1.5162080223880596) internal successors, (13003), 8576 states have internal predecessors, (13003), 0 states have call successors, (0), 0 states 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 13:30:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 13003 transitions. [2023-12-21 13:30:50,711 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 13003 transitions. Word has length 67 [2023-12-21 13:30:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:50,711 INFO L495 AbstractCegarLoop]: Abstraction has 8577 states and 13003 transitions. [2023-12-21 13:30:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 13003 transitions. [2023-12-21 13:30:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:30:50,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:50,713 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] [2023-12-21 13:30:50,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:30:50,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:50,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash 296668894, now seen corresponding path program 1 times [2023-12-21 13:30:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351243040] [2023-12-21 13:30:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:50,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:50,904 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 13:30:50,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:50,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351243040] [2023-12-21 13:30:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351243040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:50,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:50,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:30:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828192090] [2023-12-21 13:30:50,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:50,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:30:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:50,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:30:50,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:50,906 INFO L87 Difference]: Start difference. First operand 8577 states and 13003 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:51,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:51,816 INFO L93 Difference]: Finished difference Result 40497 states and 60924 transitions. [2023-12-21 13:30:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:30:51,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-21 13:30:51,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:51,861 INFO L225 Difference]: With dead ends: 40497 [2023-12-21 13:30:51,861 INFO L226 Difference]: Without dead ends: 32582 [2023-12-21 13:30:51,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:30:51,879 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1510 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:51,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1386 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:30:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32582 states. [2023-12-21 13:30:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32582 to 8727. [2023-12-21 13:30:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8727 states, 8726 states have (on average 1.5092826037130416) internal successors, (13170), 8726 states have internal predecessors, (13170), 0 states have call successors, (0), 0 states 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 13:30:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8727 states to 8727 states and 13170 transitions. [2023-12-21 13:30:52,173 INFO L78 Accepts]: Start accepts. Automaton has 8727 states and 13170 transitions. Word has length 67 [2023-12-21 13:30:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:52,173 INFO L495 AbstractCegarLoop]: Abstraction has 8727 states and 13170 transitions. [2023-12-21 13:30:52,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 13:30:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8727 states and 13170 transitions. [2023-12-21 13:30:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:30:52,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:52,176 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] [2023-12-21 13:30:52,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:30:52,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:52,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:52,177 INFO L85 PathProgramCache]: Analyzing trace with hash 143038673, now seen corresponding path program 1 times [2023-12-21 13:30:52,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:52,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119668899] [2023-12-21 13:30:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:52,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:52,266 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 13:30:52,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119668899] [2023-12-21 13:30:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119668899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:52,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:52,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:30:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727644106] [2023-12-21 13:30:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:52,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:30:52,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:30:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:30:52,268 INFO L87 Difference]: Start difference. First operand 8727 states and 13170 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:52,322 INFO L93 Difference]: Finished difference Result 22787 states and 34564 transitions. [2023-12-21 13:30:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:30:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-21 13:30:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:52,399 INFO L225 Difference]: With dead ends: 22787 [2023-12-21 13:30:52,399 INFO L226 Difference]: Without dead ends: 15137 [2023-12-21 13:30:52,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 13:30:52,407 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 170 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:52,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 603 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2023-12-21 13:30:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15031. [2023-12-21 13:30:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 1.4990019960079841) internal successors, (22530), 15030 states have internal predecessors, (22530), 0 states have call successors, (0), 0 states 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 13:30:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 22530 transitions. [2023-12-21 13:30:52,604 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 22530 transitions. Word has length 68 [2023-12-21 13:30:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:52,605 INFO L495 AbstractCegarLoop]: Abstraction has 15031 states and 22530 transitions. [2023-12-21 13:30:52,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 22530 transitions. [2023-12-21 13:30:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:30:52,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:52,608 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] [2023-12-21 13:30:52,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:30:52,608 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:52,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 897492929, now seen corresponding path program 1 times [2023-12-21 13:30:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375181816] [2023-12-21 13:30:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:52,644 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 13:30:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:52,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375181816] [2023-12-21 13:30:52,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375181816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:52,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:52,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:30:52,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805683093] [2023-12-21 13:30:52,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:52,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:30:52,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:30:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:30:52,646 INFO L87 Difference]: Start difference. First operand 15031 states and 22530 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:52,727 INFO L93 Difference]: Finished difference Result 27395 states and 41147 transitions. [2023-12-21 13:30:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:30:52,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-21 13:30:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:52,748 INFO L225 Difference]: With dead ends: 27395 [2023-12-21 13:30:52,749 INFO L226 Difference]: Without dead ends: 18429 [2023-12-21 13:30:52,762 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 13:30:52,763 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 156 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:52,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 478 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18429 states. [2023-12-21 13:30:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18429 to 18211. [2023-12-21 13:30:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 18210 states have (on average 1.4792421746293245) internal successors, (26937), 18210 states have internal predecessors, (26937), 0 states have call successors, (0), 0 states 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 13:30:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 26937 transitions. [2023-12-21 13:30:53,095 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 26937 transitions. Word has length 68 [2023-12-21 13:30:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:53,095 INFO L495 AbstractCegarLoop]: Abstraction has 18211 states and 26937 transitions. [2023-12-21 13:30:53,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 26937 transitions. [2023-12-21 13:30:53,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:30:53,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:53,098 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] [2023-12-21 13:30:53,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:30:53,098 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:53,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash 136395041, now seen corresponding path program 1 times [2023-12-21 13:30:53,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:53,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121487519] [2023-12-21 13:30:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:53,129 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 13:30:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121487519] [2023-12-21 13:30:53,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121487519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:53,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:53,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:30:53,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629257434] [2023-12-21 13:30:53,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:30:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:30:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:30:53,130 INFO L87 Difference]: Start difference. First operand 18211 states and 26937 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:53,213 INFO L93 Difference]: Finished difference Result 40143 states and 59520 transitions. [2023-12-21 13:30:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:30:53,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-21 13:30:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:53,241 INFO L225 Difference]: With dead ends: 40143 [2023-12-21 13:30:53,241 INFO L226 Difference]: Without dead ends: 24347 [2023-12-21 13:30:53,259 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 13:30:53,259 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 175 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:53,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 462 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24347 states. [2023-12-21 13:30:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24347 to 24281. [2023-12-21 13:30:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24281 states, 24280 states have (on average 1.4637149917627676) internal successors, (35539), 24280 states have internal predecessors, (35539), 0 states have call successors, (0), 0 states 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 13:30:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24281 states to 24281 states and 35539 transitions. [2023-12-21 13:30:53,596 INFO L78 Accepts]: Start accepts. Automaton has 24281 states and 35539 transitions. Word has length 68 [2023-12-21 13:30:53,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:53,597 INFO L495 AbstractCegarLoop]: Abstraction has 24281 states and 35539 transitions. [2023-12-21 13:30:53,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 24281 states and 35539 transitions. [2023-12-21 13:30:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:30:53,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:53,600 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] [2023-12-21 13:30:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:30:53,600 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:53,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1838550528, now seen corresponding path program 1 times [2023-12-21 13:30:53,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:53,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049081711] [2023-12-21 13:30:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:53,630 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 13:30:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:53,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049081711] [2023-12-21 13:30:53,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049081711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:53,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:53,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:30:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403773038] [2023-12-21 13:30:53,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:53,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:30:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:30:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:30:53,631 INFO L87 Difference]: Start difference. First operand 24281 states and 35539 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:53,715 INFO L93 Difference]: Finished difference Result 33906 states and 49405 transitions. [2023-12-21 13:30:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:30:53,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-21 13:30:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:53,748 INFO L225 Difference]: With dead ends: 33906 [2023-12-21 13:30:53,748 INFO L226 Difference]: Without dead ends: 24822 [2023-12-21 13:30:53,762 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 13:30:53,763 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 143 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:53,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 462 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24822 states. [2023-12-21 13:30:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24822 to 22224. [2023-12-21 13:30:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22224 states, 22223 states have (on average 1.4353597624083156) internal successors, (31898), 22223 states have internal predecessors, (31898), 0 states have call successors, (0), 0 states 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 13:30:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22224 states to 22224 states and 31898 transitions. [2023-12-21 13:30:54,083 INFO L78 Accepts]: Start accepts. Automaton has 22224 states and 31898 transitions. Word has length 68 [2023-12-21 13:30:54,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:54,084 INFO L495 AbstractCegarLoop]: Abstraction has 22224 states and 31898 transitions. [2023-12-21 13:30:54,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 22224 states and 31898 transitions. [2023-12-21 13:30:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:30:54,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:54,086 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] [2023-12-21 13:30:54,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:30:54,087 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:54,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -100445024, now seen corresponding path program 1 times [2023-12-21 13:30:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927537057] [2023-12-21 13:30:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:54,117 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 13:30:54,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:54,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927537057] [2023-12-21 13:30:54,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927537057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:54,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:54,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:30:54,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920725412] [2023-12-21 13:30:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:54,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:30:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:30:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:30:54,119 INFO L87 Difference]: Start difference. First operand 22224 states and 31898 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:54,223 INFO L93 Difference]: Finished difference Result 44869 states and 64240 transitions. [2023-12-21 13:30:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:30:54,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-21 13:30:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:54,254 INFO L225 Difference]: With dead ends: 44869 [2023-12-21 13:30:54,255 INFO L226 Difference]: Without dead ends: 25147 [2023-12-21 13:30:54,273 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 13:30:54,274 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 161 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:54,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 552 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25147 states. [2023-12-21 13:30:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25147 to 24901. [2023-12-21 13:30:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24901 states, 24900 states have (on average 1.398433734939759) internal successors, (34821), 24900 states have internal predecessors, (34821), 0 states have call successors, (0), 0 states 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 13:30:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24901 states to 24901 states and 34821 transitions. [2023-12-21 13:30:54,768 INFO L78 Accepts]: Start accepts. Automaton has 24901 states and 34821 transitions. Word has length 68 [2023-12-21 13:30:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:54,769 INFO L495 AbstractCegarLoop]: Abstraction has 24901 states and 34821 transitions. [2023-12-21 13:30:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:30:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 24901 states and 34821 transitions. [2023-12-21 13:30:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:30:54,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:54,771 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] [2023-12-21 13:30:54,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:30:54,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:54,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1940195899, now seen corresponding path program 1 times [2023-12-21 13:30:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466422206] [2023-12-21 13:30:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:54,858 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 13:30:54,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466422206] [2023-12-21 13:30:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466422206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:54,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:54,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:30:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605333497] [2023-12-21 13:30:54,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:54,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:30:54,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:30:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:30:54,860 INFO L87 Difference]: Start difference. First operand 24901 states and 34821 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:55,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:55,030 INFO L93 Difference]: Finished difference Result 52990 states and 74772 transitions. [2023-12-21 13:30:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:30:55,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-21 13:30:55,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:55,078 INFO L225 Difference]: With dead ends: 52990 [2023-12-21 13:30:55,078 INFO L226 Difference]: Without dead ends: 42896 [2023-12-21 13:30:55,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:55,096 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1083 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:55,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1131 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42896 states. [2023-12-21 13:30:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42896 to 34309. [2023-12-21 13:30:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34309 states, 34308 states have (on average 1.3987991139092923) internal successors, (47990), 34308 states have internal predecessors, (47990), 0 states have call successors, (0), 0 states 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 13:30:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 47990 transitions. [2023-12-21 13:30:55,661 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 47990 transitions. Word has length 69 [2023-12-21 13:30:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:55,661 INFO L495 AbstractCegarLoop]: Abstraction has 34309 states and 47990 transitions. [2023-12-21 13:30:55,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 47990 transitions. [2023-12-21 13:30:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:30:55,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:55,664 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] [2023-12-21 13:30:55,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:30:55,664 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:55,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash 520253443, now seen corresponding path program 1 times [2023-12-21 13:30:55,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49045411] [2023-12-21 13:30:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:55,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:55,733 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 13:30:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49045411] [2023-12-21 13:30:55,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49045411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:55,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:55,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:30:55,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495105746] [2023-12-21 13:30:55,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:55,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:30:55,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:30:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:30:55,735 INFO L87 Difference]: Start difference. First operand 34309 states and 47990 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:55,908 INFO L93 Difference]: Finished difference Result 52475 states and 73829 transitions. [2023-12-21 13:30:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:30:55,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-21 13:30:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:55,979 INFO L225 Difference]: With dead ends: 52475 [2023-12-21 13:30:55,979 INFO L226 Difference]: Without dead ends: 49485 [2023-12-21 13:30:55,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:55,998 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1105 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:55,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1208 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49485 states. [2023-12-21 13:30:56,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49485 to 37252. [2023-12-21 13:30:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37252 states, 37251 states have (on average 1.3991839145257845) internal successors, (52121), 37251 states have internal predecessors, (52121), 0 states have call successors, (0), 0 states 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 13:30:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37252 states to 37252 states and 52121 transitions. [2023-12-21 13:30:56,749 INFO L78 Accepts]: Start accepts. Automaton has 37252 states and 52121 transitions. Word has length 69 [2023-12-21 13:30:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:56,750 INFO L495 AbstractCegarLoop]: Abstraction has 37252 states and 52121 transitions. [2023-12-21 13:30:56,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 37252 states and 52121 transitions. [2023-12-21 13:30:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:30:56,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:56,752 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] [2023-12-21 13:30:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:30:56,752 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:56,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1252332142, now seen corresponding path program 1 times [2023-12-21 13:30:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805529834] [2023-12-21 13:30:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:56,816 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 13:30:56,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:56,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805529834] [2023-12-21 13:30:56,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805529834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:56,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:56,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:30:56,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615258634] [2023-12-21 13:30:56,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:56,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:30:56,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:30:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:30:56,819 INFO L87 Difference]: Start difference. First operand 37252 states and 52121 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:57,018 INFO L93 Difference]: Finished difference Result 58966 states and 82996 transitions. [2023-12-21 13:30:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:30:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-21 13:30:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:57,085 INFO L225 Difference]: With dead ends: 58966 [2023-12-21 13:30:57,086 INFO L226 Difference]: Without dead ends: 52352 [2023-12-21 13:30:57,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:57,106 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1029 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:57,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1352 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52352 states. [2023-12-21 13:30:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52352 to 41437. [2023-12-21 13:30:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41437 states, 41436 states have (on average 1.4011970267400329) internal successors, (58060), 41436 states have internal predecessors, (58060), 0 states have call successors, (0), 0 states 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 13:30:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41437 states to 41437 states and 58060 transitions. [2023-12-21 13:30:57,803 INFO L78 Accepts]: Start accepts. Automaton has 41437 states and 58060 transitions. Word has length 69 [2023-12-21 13:30:57,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:57,803 INFO L495 AbstractCegarLoop]: Abstraction has 41437 states and 58060 transitions. [2023-12-21 13:30:57,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:57,804 INFO L276 IsEmpty]: Start isEmpty. Operand 41437 states and 58060 transitions. [2023-12-21 13:30:57,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:30:57,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:57,806 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] [2023-12-21 13:30:57,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:30:57,806 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:57,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash 662995848, now seen corresponding path program 1 times [2023-12-21 13:30:57,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:57,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816187792] [2023-12-21 13:30:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:57,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:57,870 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 13:30:57,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816187792] [2023-12-21 13:30:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816187792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:57,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:57,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:30:57,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265240636] [2023-12-21 13:30:57,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:57,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:30:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:30:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:30:57,871 INFO L87 Difference]: Start difference. First operand 41437 states and 58060 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:58,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:58,097 INFO L93 Difference]: Finished difference Result 71178 states and 100264 transitions. [2023-12-21 13:30:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:30:58,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-21 13:30:58,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:58,184 INFO L225 Difference]: With dead ends: 71178 [2023-12-21 13:30:58,185 INFO L226 Difference]: Without dead ends: 60737 [2023-12-21 13:30:58,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:30:58,215 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1087 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:58,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1306 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:30:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60737 states. [2023-12-21 13:30:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60737 to 45935. [2023-12-21 13:30:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45935 states, 45934 states have (on average 1.4016414856097879) internal successors, (64383), 45934 states have internal predecessors, (64383), 0 states have call successors, (0), 0 states 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 13:30:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45935 states to 45935 states and 64383 transitions. [2023-12-21 13:30:59,100 INFO L78 Accepts]: Start accepts. Automaton has 45935 states and 64383 transitions. Word has length 69 [2023-12-21 13:30:59,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:59,100 INFO L495 AbstractCegarLoop]: Abstraction has 45935 states and 64383 transitions. [2023-12-21 13:30:59,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 13:30:59,100 INFO L276 IsEmpty]: Start isEmpty. Operand 45935 states and 64383 transitions. [2023-12-21 13:30:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:30:59,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:59,104 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] [2023-12-21 13:30:59,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:30:59,104 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:59,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1615492394, now seen corresponding path program 1 times [2023-12-21 13:30:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:59,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483620362] [2023-12-21 13:30:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:59,173 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 13:30:59,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:59,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483620362] [2023-12-21 13:30:59,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483620362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:59,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:59,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:30:59,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706059696] [2023-12-21 13:30:59,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:59,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:30:59,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:59,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:30:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:30:59,176 INFO L87 Difference]: Start difference. First operand 45935 states and 64383 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:00,281 INFO L93 Difference]: Finished difference Result 207149 states and 289365 transitions. [2023-12-21 13:31:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:31:00,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:31:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:00,494 INFO L225 Difference]: With dead ends: 207149 [2023-12-21 13:31:00,495 INFO L226 Difference]: Without dead ends: 184691 [2023-12-21 13:31:00,535 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 13:31:00,542 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 2969 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:00,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 534 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:31:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184691 states. [2023-12-21 13:31:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184691 to 46039. [2023-12-21 13:31:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46039 states, 46038 states have (on average 1.4011903210391417) internal successors, (64508), 46038 states have internal predecessors, (64508), 0 states have call successors, (0), 0 states 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 13:31:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46039 states to 46039 states and 64508 transitions. [2023-12-21 13:31:02,181 INFO L78 Accepts]: Start accepts. Automaton has 46039 states and 64508 transitions. Word has length 74 [2023-12-21 13:31:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:02,181 INFO L495 AbstractCegarLoop]: Abstraction has 46039 states and 64508 transitions. [2023-12-21 13:31:02,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 46039 states and 64508 transitions. [2023-12-21 13:31:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:31:02,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:02,184 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] [2023-12-21 13:31:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:31:02,185 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:02,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 282958172, now seen corresponding path program 1 times [2023-12-21 13:31:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102492737] [2023-12-21 13:31:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:02,258 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 13:31:02,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:02,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102492737] [2023-12-21 13:31:02,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102492737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:02,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:02,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:31:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49038750] [2023-12-21 13:31:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:31:02,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:31:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:31:02,260 INFO L87 Difference]: Start difference. First operand 46039 states and 64508 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:03,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:03,265 INFO L93 Difference]: Finished difference Result 196656 states and 272796 transitions. [2023-12-21 13:31:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:31:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:31:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:03,496 INFO L225 Difference]: With dead ends: 196656 [2023-12-21 13:31:03,497 INFO L226 Difference]: Without dead ends: 179626 [2023-12-21 13:31:03,532 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 13:31:03,533 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 2261 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2261 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:03,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2261 Valid, 576 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:31:03,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179626 states. [2023-12-21 13:31:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179626 to 46201. [2023-12-21 13:31:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46201 states, 46200 states have (on average 1.4004545454545454) internal successors, (64701), 46200 states have internal predecessors, (64701), 0 states have call successors, (0), 0 states 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 13:31:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46201 states to 46201 states and 64701 transitions. [2023-12-21 13:31:05,113 INFO L78 Accepts]: Start accepts. Automaton has 46201 states and 64701 transitions. Word has length 74 [2023-12-21 13:31:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:05,113 INFO L495 AbstractCegarLoop]: Abstraction has 46201 states and 64701 transitions. [2023-12-21 13:31:05,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 46201 states and 64701 transitions. [2023-12-21 13:31:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:31:05,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:05,117 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] [2023-12-21 13:31:05,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:31:05,117 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:05,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1376997652, now seen corresponding path program 1 times [2023-12-21 13:31:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515470290] [2023-12-21 13:31:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:05,219 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 13:31:05,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515470290] [2023-12-21 13:31:05,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515470290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:05,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:05,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:31:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619092076] [2023-12-21 13:31:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:31:05,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:31:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:31:05,220 INFO L87 Difference]: Start difference. First operand 46201 states and 64701 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:06,002 INFO L93 Difference]: Finished difference Result 164590 states and 229161 transitions. [2023-12-21 13:31:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:31:06,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:31:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:06,200 INFO L225 Difference]: With dead ends: 164590 [2023-12-21 13:31:06,200 INFO L226 Difference]: Without dead ends: 137362 [2023-12-21 13:31:06,252 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 13:31:06,252 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 2161 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:06,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 435 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:31:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137362 states. [2023-12-21 13:31:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137362 to 46251. [2023-12-21 13:31:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46251 states, 46250 states have (on average 1.4002378378378377) internal successors, (64761), 46250 states have internal predecessors, (64761), 0 states have call successors, (0), 0 states 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 13:31:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46251 states to 46251 states and 64761 transitions. [2023-12-21 13:31:07,545 INFO L78 Accepts]: Start accepts. Automaton has 46251 states and 64761 transitions. Word has length 74 [2023-12-21 13:31:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:07,545 INFO L495 AbstractCegarLoop]: Abstraction has 46251 states and 64761 transitions. [2023-12-21 13:31:07,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 46251 states and 64761 transitions. [2023-12-21 13:31:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:31:07,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:07,549 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] [2023-12-21 13:31:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:31:07,549 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:07,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash -760049320, now seen corresponding path program 1 times [2023-12-21 13:31:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748628578] [2023-12-21 13:31:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:07,645 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 13:31:07,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748628578] [2023-12-21 13:31:07,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748628578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:07,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:07,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:31:07,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713008269] [2023-12-21 13:31:07,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:31:07,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:07,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:31:07,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:31:07,648 INFO L87 Difference]: Start difference. First operand 46251 states and 64761 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:08,616 INFO L93 Difference]: Finished difference Result 166923 states and 230853 transitions. [2023-12-21 13:31:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:31:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 13:31:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:08,791 INFO L225 Difference]: With dead ends: 166923 [2023-12-21 13:31:08,791 INFO L226 Difference]: Without dead ends: 158125 [2023-12-21 13:31:08,812 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 13:31:08,812 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2290 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:08,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 495 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:31:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158125 states. [2023-12-21 13:31:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158125 to 46500. [2023-12-21 13:31:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46500 states, 46499 states have (on average 1.3989763220714424) internal successors, (65051), 46499 states have internal predecessors, (65051), 0 states have call successors, (0), 0 states 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 13:31:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46500 states to 46500 states and 65051 transitions. [2023-12-21 13:31:10,153 INFO L78 Accepts]: Start accepts. Automaton has 46500 states and 65051 transitions. Word has length 74 [2023-12-21 13:31:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:10,153 INFO L495 AbstractCegarLoop]: Abstraction has 46500 states and 65051 transitions. [2023-12-21 13:31:10,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 13:31:10,154 INFO L276 IsEmpty]: Start isEmpty. Operand 46500 states and 65051 transitions. [2023-12-21 13:31:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:31:10,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:10,158 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] [2023-12-21 13:31:10,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:31:10,158 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:10,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1870035016, now seen corresponding path program 1 times [2023-12-21 13:31:10,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:10,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227241263] [2023-12-21 13:31:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:10,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:10,829 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 13:31:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227241263] [2023-12-21 13:31:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227241263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:10,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:10,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:31:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080466328] [2023-12-21 13:31:10,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:31:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:31:10,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:31:10,831 INFO L87 Difference]: Start difference. First operand 46500 states and 65051 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:31:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:12,360 INFO L93 Difference]: Finished difference Result 129084 states and 180611 transitions. [2023-12-21 13:31:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 13:31:12,361 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-21 13:31:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:12,527 INFO L225 Difference]: With dead ends: 129084 [2023-12-21 13:31:12,528 INFO L226 Difference]: Without dead ends: 123142 [2023-12-21 13:31:12,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:31:12,567 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 2316 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:12,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 4037 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:31:12,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123142 states. [2023-12-21 13:31:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123142 to 46513. [2023-12-21 13:31:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46513 states, 46512 states have (on average 1.3987143102855177) internal successors, (65057), 46512 states have internal predecessors, (65057), 0 states have call successors, (0), 0 states 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 13:31:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46513 states to 46513 states and 65057 transitions. [2023-12-21 13:31:13,604 INFO L78 Accepts]: Start accepts. Automaton has 46513 states and 65057 transitions. Word has length 76 [2023-12-21 13:31:13,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:13,604 INFO L495 AbstractCegarLoop]: Abstraction has 46513 states and 65057 transitions. [2023-12-21 13:31:13,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:31:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand 46513 states and 65057 transitions. [2023-12-21 13:31:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:31:13,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:13,609 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] [2023-12-21 13:31:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:31:13,609 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:13,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash 484016192, now seen corresponding path program 1 times [2023-12-21 13:31:13,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:13,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304048960] [2023-12-21 13:31:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:13,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:13,882 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 13:31:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304048960] [2023-12-21 13:31:13,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304048960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:13,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:13,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:31:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674939823] [2023-12-21 13:31:13,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:13,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:31:13,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:31:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:31:13,884 INFO L87 Difference]: Start difference. First operand 46513 states and 65057 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:31:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:15,187 INFO L93 Difference]: Finished difference Result 188072 states and 263309 transitions. [2023-12-21 13:31:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:31:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-21 13:31:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:15,654 INFO L225 Difference]: With dead ends: 188072 [2023-12-21 13:31:15,654 INFO L226 Difference]: Without dead ends: 182896 [2023-12-21 13:31:15,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:31:15,687 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 2438 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:15,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 3522 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:31:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182896 states. [2023-12-21 13:31:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182896 to 45830. [2023-12-21 13:31:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45830 states, 45829 states have (on average 1.399375940998058) internal successors, (64132), 45829 states have internal predecessors, (64132), 0 states have call successors, (0), 0 states 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 13:31:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45830 states to 45830 states and 64132 transitions. [2023-12-21 13:31:16,963 INFO L78 Accepts]: Start accepts. Automaton has 45830 states and 64132 transitions. Word has length 76 [2023-12-21 13:31:16,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:16,964 INFO L495 AbstractCegarLoop]: Abstraction has 45830 states and 64132 transitions. [2023-12-21 13:31:16,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:31:16,964 INFO L276 IsEmpty]: Start isEmpty. Operand 45830 states and 64132 transitions. [2023-12-21 13:31:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:31:16,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:16,968 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] [2023-12-21 13:31:16,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:31:16,968 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:16,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash 159257590, now seen corresponding path program 1 times [2023-12-21 13:31:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:16,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686493228] [2023-12-21 13:31:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:16,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:17,523 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 13:31:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686493228] [2023-12-21 13:31:17,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686493228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:17,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:17,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:31:17,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58030972] [2023-12-21 13:31:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:17,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:31:17,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:17,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:31:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:31:17,525 INFO L87 Difference]: Start difference. First operand 45830 states and 64132 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:31:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:19,131 INFO L93 Difference]: Finished difference Result 180440 states and 252712 transitions. [2023-12-21 13:31:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 13:31:19,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-21 13:31:19,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:19,370 INFO L225 Difference]: With dead ends: 180440 [2023-12-21 13:31:19,371 INFO L226 Difference]: Without dead ends: 167248 [2023-12-21 13:31:19,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:31:19,407 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 3083 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3083 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:19,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3083 Valid, 3363 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:31:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167248 states. [2023-12-21 13:31:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167248 to 45789. [2023-12-21 13:31:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45789 states, 45788 states have (on average 1.3995588363763432) internal successors, (64083), 45788 states have internal predecessors, (64083), 0 states have call successors, (0), 0 states 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 13:31:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45789 states to 45789 states and 64083 transitions. [2023-12-21 13:31:20,710 INFO L78 Accepts]: Start accepts. Automaton has 45789 states and 64083 transitions. Word has length 76 [2023-12-21 13:31:20,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:20,710 INFO L495 AbstractCegarLoop]: Abstraction has 45789 states and 64083 transitions. [2023-12-21 13:31:20,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 13:31:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 45789 states and 64083 transitions. [2023-12-21 13:31:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:31:20,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:20,715 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] [2023-12-21 13:31:20,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:31:20,715 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:20,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1971062765, now seen corresponding path program 1 times [2023-12-21 13:31:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99700943] [2023-12-21 13:31:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:20,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:20,748 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 13:31:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:20,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99700943] [2023-12-21 13:31:20,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99700943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:20,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:20,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:20,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016748855] [2023-12-21 13:31:20,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:20,750 INFO L87 Difference]: Start difference. First operand 45789 states and 64083 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 13:31:21,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:21,154 INFO L93 Difference]: Finished difference Result 92413 states and 129510 transitions. [2023-12-21 13:31:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:31:21,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 13:31:21,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:21,230 INFO L225 Difference]: With dead ends: 92413 [2023-12-21 13:31:21,230 INFO L226 Difference]: Without dead ends: 61644 [2023-12-21 13:31:21,249 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 13:31:21,249 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 183 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:21,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 360 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:31:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61644 states. [2023-12-21 13:31:21,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61644 to 41594. [2023-12-21 13:31:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41594 states, 41593 states have (on average 1.4004760416416224) internal successors, (58250), 41593 states have internal predecessors, (58250), 0 states have call successors, (0), 0 states 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 13:31:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41594 states to 41594 states and 58250 transitions. [2023-12-21 13:31:21,891 INFO L78 Accepts]: Start accepts. Automaton has 41594 states and 58250 transitions. Word has length 77 [2023-12-21 13:31:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:21,891 INFO L495 AbstractCegarLoop]: Abstraction has 41594 states and 58250 transitions. [2023-12-21 13:31:21,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 13:31:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 41594 states and 58250 transitions. [2023-12-21 13:31:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:31:21,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:21,897 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] [2023-12-21 13:31:21,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:31:21,897 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:21,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 745005614, now seen corresponding path program 1 times [2023-12-21 13:31:21,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992481017] [2023-12-21 13:31:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:21,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:21,930 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 13:31:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992481017] [2023-12-21 13:31:21,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992481017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:21,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:21,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142819872] [2023-12-21 13:31:21,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:21,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:21,932 INFO L87 Difference]: Start difference. First operand 41594 states and 58250 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:31:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:22,159 INFO L93 Difference]: Finished difference Result 88669 states and 124290 transitions. [2023-12-21 13:31:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:31:22,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 13:31:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:22,239 INFO L225 Difference]: With dead ends: 88669 [2023-12-21 13:31:22,239 INFO L226 Difference]: Without dead ends: 61388 [2023-12-21 13:31:22,271 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 13:31:22,272 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 181 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:22,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 424 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:31:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61388 states. [2023-12-21 13:31:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61388 to 61174. [2023-12-21 13:31:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61174 states, 61173 states have (on average 1.403936377159858) internal successors, (85883), 61173 states have internal predecessors, (85883), 0 states have call successors, (0), 0 states 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 13:31:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61174 states to 61174 states and 85883 transitions. [2023-12-21 13:31:23,290 INFO L78 Accepts]: Start accepts. Automaton has 61174 states and 85883 transitions. Word has length 80 [2023-12-21 13:31:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:23,290 INFO L495 AbstractCegarLoop]: Abstraction has 61174 states and 85883 transitions. [2023-12-21 13:31:23,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:31:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 61174 states and 85883 transitions. [2023-12-21 13:31:23,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 13:31:23,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:23,309 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] [2023-12-21 13:31:23,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:31:23,309 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash -639780682, now seen corresponding path program 1 times [2023-12-21 13:31:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577185997] [2023-12-21 13:31:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:23,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:23,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:23,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577185997] [2023-12-21 13:31:23,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577185997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:23,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:23,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:23,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898498402] [2023-12-21 13:31:23,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:23,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:23,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:23,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:23,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:23,371 INFO L87 Difference]: Start difference. First operand 61174 states and 85883 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 13:31:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:23,924 INFO L93 Difference]: Finished difference Result 129158 states and 182532 transitions. [2023-12-21 13:31:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:31:23,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-21 13:31:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:24,040 INFO L225 Difference]: With dead ends: 129158 [2023-12-21 13:31:24,041 INFO L226 Difference]: Without dead ends: 93846 [2023-12-21 13:31:24,068 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 13:31:24,068 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 125 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 512 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 13:31:24,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 512 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:31:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93846 states. [2023-12-21 13:31:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93846 to 88841. [2023-12-21 13:31:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88841 states, 88840 states have (on average 1.4013957676722197) internal successors, (124500), 88840 states have internal predecessors, (124500), 0 states have call successors, (0), 0 states 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 13:31:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88841 states to 88841 states and 124500 transitions. [2023-12-21 13:31:25,301 INFO L78 Accepts]: Start accepts. Automaton has 88841 states and 124500 transitions. Word has length 90 [2023-12-21 13:31:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:25,301 INFO L495 AbstractCegarLoop]: Abstraction has 88841 states and 124500 transitions. [2023-12-21 13:31:25,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 13:31:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 88841 states and 124500 transitions. [2023-12-21 13:31:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:31:25,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:25,314 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] [2023-12-21 13:31:25,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:31:25,314 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:25,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1425466717, now seen corresponding path program 1 times [2023-12-21 13:31:25,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:25,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843519054] [2023-12-21 13:31:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:25,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:25,400 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 13:31:25,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:25,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843519054] [2023-12-21 13:31:25,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843519054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:25,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:25,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:31:25,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375453617] [2023-12-21 13:31:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:25,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:31:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:25,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:31:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:31:25,402 INFO L87 Difference]: Start difference. First operand 88841 states and 124500 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 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 13:31:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:26,610 INFO L93 Difference]: Finished difference Result 319206 states and 445757 transitions. [2023-12-21 13:31:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:31:26,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 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 13:31:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:26,966 INFO L225 Difference]: With dead ends: 319206 [2023-12-21 13:31:26,966 INFO L226 Difference]: Without dead ends: 236604 [2023-12-21 13:31:27,049 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 13:31:27,050 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2609 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:27,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 456 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:31:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236604 states. [2023-12-21 13:31:29,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236604 to 101102. [2023-12-21 13:31:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101102 states, 101101 states have (on average 1.4040711763484042) internal successors, (141953), 101101 states have internal predecessors, (141953), 0 states have call successors, (0), 0 states 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 13:31:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101102 states to 101102 states and 141953 transitions. [2023-12-21 13:31:29,420 INFO L78 Accepts]: Start accepts. Automaton has 101102 states and 141953 transitions. Word has length 96 [2023-12-21 13:31:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:29,420 INFO L495 AbstractCegarLoop]: Abstraction has 101102 states and 141953 transitions. [2023-12-21 13:31:29,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 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 13:31:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 101102 states and 141953 transitions. [2023-12-21 13:31:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 13:31:29,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:29,435 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] [2023-12-21 13:31:29,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 13:31:29,436 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:29,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:29,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2035860627, now seen corresponding path program 1 times [2023-12-21 13:31:29,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:29,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928730596] [2023-12-21 13:31:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:29,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:29,507 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 13:31:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928730596] [2023-12-21 13:31:29,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928730596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:29,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:31:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404549906] [2023-12-21 13:31:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:31:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:31:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:31:29,508 INFO L87 Difference]: Start difference. First operand 101102 states and 141953 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 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 13:31:31,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:31,345 INFO L93 Difference]: Finished difference Result 442590 states and 618582 transitions. [2023-12-21 13:31:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:31:31,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 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 13:31:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:32,036 INFO L225 Difference]: With dead ends: 442590 [2023-12-21 13:31:32,036 INFO L226 Difference]: Without dead ends: 376756 [2023-12-21 13:31:32,143 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 13:31:32,143 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2303 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:32,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 472 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:31:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376756 states. [2023-12-21 13:31:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376756 to 155212. [2023-12-21 13:31:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155212 states, 155211 states have (on average 1.4172513546075987) internal successors, (219973), 155211 states have internal predecessors, (219973), 0 states have call successors, (0), 0 states 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 13:31:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155212 states to 155212 states and 219973 transitions. [2023-12-21 13:31:35,975 INFO L78 Accepts]: Start accepts. Automaton has 155212 states and 219973 transitions. Word has length 97 [2023-12-21 13:31:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:35,975 INFO L495 AbstractCegarLoop]: Abstraction has 155212 states and 219973 transitions. [2023-12-21 13:31:35,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 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 13:31:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 155212 states and 219973 transitions. [2023-12-21 13:31:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 13:31:35,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:35,991 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] [2023-12-21 13:31:35,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:31:35,991 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:35,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash -442541654, now seen corresponding path program 1 times [2023-12-21 13:31:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:35,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542398729] [2023-12-21 13:31:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:31:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542398729] [2023-12-21 13:31:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542398729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:36,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:36,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417975961] [2023-12-21 13:31:36,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:36,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:36,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:36,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:36,026 INFO L87 Difference]: Start difference. First operand 155212 states and 219973 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 13:31:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:36,913 INFO L93 Difference]: Finished difference Result 248457 states and 351961 transitions. [2023-12-21 13:31:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:31:36,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 98 [2023-12-21 13:31:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:37,118 INFO L225 Difference]: With dead ends: 248457 [2023-12-21 13:31:37,119 INFO L226 Difference]: Without dead ends: 144938 [2023-12-21 13:31:37,180 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 13:31:37,180 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 161 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:37,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 604 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:31:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144938 states. [2023-12-21 13:31:38,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144938 to 144936. [2023-12-21 13:31:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144936 states, 144935 states have (on average 1.409259323144858) internal successors, (204251), 144935 states have internal predecessors, (204251), 0 states have call successors, (0), 0 states 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 13:31:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144936 states to 144936 states and 204251 transitions. [2023-12-21 13:31:39,087 INFO L78 Accepts]: Start accepts. Automaton has 144936 states and 204251 transitions. Word has length 98 [2023-12-21 13:31:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:39,087 INFO L495 AbstractCegarLoop]: Abstraction has 144936 states and 204251 transitions. [2023-12-21 13:31:39,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 13:31:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 144936 states and 204251 transitions. [2023-12-21 13:31:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 13:31:39,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:39,104 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] [2023-12-21 13:31:39,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:31:39,105 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:39,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1283133538, now seen corresponding path program 1 times [2023-12-21 13:31:39,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:39,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782003693] [2023-12-21 13:31:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:39,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:31:39,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:39,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782003693] [2023-12-21 13:31:39,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782003693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:39,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:39,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062519355] [2023-12-21 13:31:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:39,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:39,130 INFO L87 Difference]: Start difference. First operand 144936 states and 204251 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 13:31:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:40,140 INFO L93 Difference]: Finished difference Result 267932 states and 377974 transitions. [2023-12-21 13:31:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:31:40,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 99 [2023-12-21 13:31:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:40,376 INFO L225 Difference]: With dead ends: 267932 [2023-12-21 13:31:40,377 INFO L226 Difference]: Without dead ends: 174163 [2023-12-21 13:31:40,453 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 13:31:40,454 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 190 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:40,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 362 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:31:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174163 states. [2023-12-21 13:31:42,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174163 to 131171. [2023-12-21 13:31:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131171 states, 131170 states have (on average 1.4051917359152246) internal successors, (184319), 131170 states have internal predecessors, (184319), 0 states have call successors, (0), 0 states 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 13:31:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131171 states to 131171 states and 184319 transitions. [2023-12-21 13:31:42,444 INFO L78 Accepts]: Start accepts. Automaton has 131171 states and 184319 transitions. Word has length 99 [2023-12-21 13:31:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:42,444 INFO L495 AbstractCegarLoop]: Abstraction has 131171 states and 184319 transitions. [2023-12-21 13:31:42,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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 13:31:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 131171 states and 184319 transitions. [2023-12-21 13:31:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 13:31:42,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:42,459 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] [2023-12-21 13:31:42,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 13:31:42,459 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:42,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1202729003, now seen corresponding path program 1 times [2023-12-21 13:31:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692917118] [2023-12-21 13:31:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:31:42,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692917118] [2023-12-21 13:31:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692917118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956081049] [2023-12-21 13:31:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:42,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:42,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:42,484 INFO L87 Difference]: Start difference. First operand 131171 states and 184319 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 13:31:43,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:43,397 INFO L93 Difference]: Finished difference Result 285268 states and 400945 transitions. [2023-12-21 13:31:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:31:43,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 100 [2023-12-21 13:31:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:43,699 INFO L225 Difference]: With dead ends: 285268 [2023-12-21 13:31:43,700 INFO L226 Difference]: Without dead ends: 203203 [2023-12-21 13:31:43,788 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 13:31:43,789 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 181 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:43,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 358 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:31:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203203 states. [2023-12-21 13:31:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203203 to 202646. [2023-12-21 13:31:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202646 states, 202645 states have (on average 1.4066865701102913) internal successors, (285058), 202645 states have internal predecessors, (285058), 0 states have call successors, (0), 0 states 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 13:31:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202646 states to 202646 states and 285058 transitions. [2023-12-21 13:31:46,910 INFO L78 Accepts]: Start accepts. Automaton has 202646 states and 285058 transitions. Word has length 100 [2023-12-21 13:31:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:46,910 INFO L495 AbstractCegarLoop]: Abstraction has 202646 states and 285058 transitions. [2023-12-21 13:31:46,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 13:31:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 202646 states and 285058 transitions. [2023-12-21 13:31:46,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:31:46,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:46,921 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] [2023-12-21 13:31:46,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:31:46,922 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:46,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash -652759584, now seen corresponding path program 1 times [2023-12-21 13:31:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:46,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535203484] [2023-12-21 13:31:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:46,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:46,991 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 13:31:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535203484] [2023-12-21 13:31:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535203484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:46,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:46,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:31:46,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043620512] [2023-12-21 13:31:46,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:46,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:31:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:46,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:31:46,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:31:46,993 INFO L87 Difference]: Start difference. First operand 202646 states and 285058 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 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 13:31:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:49,596 INFO L93 Difference]: Finished difference Result 737381 states and 1033612 transitions. [2023-12-21 13:31:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:31:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 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 13:31:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:51,225 INFO L225 Difference]: With dead ends: 737381 [2023-12-21 13:31:51,225 INFO L226 Difference]: Without dead ends: 654944 [2023-12-21 13:31:51,351 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 13:31:51,351 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1992 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:51,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 452 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:31:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654944 states. [2023-12-21 13:31:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654944 to 291982. [2023-12-21 13:31:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291982 states, 291981 states have (on average 1.404529746798593) internal successors, (410096), 291981 states have internal predecessors, (410096), 0 states have call successors, (0), 0 states 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 13:31:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291982 states to 291982 states and 410096 transitions. [2023-12-21 13:31:57,846 INFO L78 Accepts]: Start accepts. Automaton has 291982 states and 410096 transitions. Word has length 101 [2023-12-21 13:31:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:57,846 INFO L495 AbstractCegarLoop]: Abstraction has 291982 states and 410096 transitions. [2023-12-21 13:31:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 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 13:31:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 291982 states and 410096 transitions. [2023-12-21 13:31:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:31:57,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:57,878 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 13:31:57,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 13:31:57,878 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:57,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -702734181, now seen corresponding path program 1 times [2023-12-21 13:31:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62415032] [2023-12-21 13:31:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 13:31:57,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:57,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62415032] [2023-12-21 13:31:57,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62415032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:57,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:57,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:57,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727635899] [2023-12-21 13:31:57,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:57,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:57,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:57,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:57,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:57,934 INFO L87 Difference]: Start difference. First operand 291982 states and 410096 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 13:32:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:00,415 INFO L93 Difference]: Finished difference Result 678307 states and 944752 transitions. [2023-12-21 13:32:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:00,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 111 [2023-12-21 13:32:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:01,727 INFO L225 Difference]: With dead ends: 678307 [2023-12-21 13:32:01,727 INFO L226 Difference]: Without dead ends: 387798 [2023-12-21 13:32:01,836 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 13:32:01,837 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 115 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 483 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 13:32:01,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 483 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:02,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387798 states. [2023-12-21 13:32:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387798 to 370138. [2023-12-21 13:32:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370138 states, 370137 states have (on average 1.3770549823443752) internal successors, (509699), 370137 states have internal predecessors, (509699), 0 states have call successors, (0), 0 states 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 13:32:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370138 states to 370138 states and 509699 transitions. [2023-12-21 13:32:07,172 INFO L78 Accepts]: Start accepts. Automaton has 370138 states and 509699 transitions. Word has length 111 [2023-12-21 13:32:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:07,172 INFO L495 AbstractCegarLoop]: Abstraction has 370138 states and 509699 transitions. [2023-12-21 13:32:07,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 13:32:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 370138 states and 509699 transitions. [2023-12-21 13:32:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:32:07,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:07,199 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 13:32:07,199 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -706448717, now seen corresponding path program 1 times [2023-12-21 13:32:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823316703] [2023-12-21 13:32:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:32:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823316703] [2023-12-21 13:32:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823316703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:07,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:07,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813418251] [2023-12-21 13:32:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:07,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:07,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:07,232 INFO L87 Difference]: Start difference. First operand 370138 states and 509699 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 13:32:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:09,086 INFO L93 Difference]: Finished difference Result 469912 states and 646093 transitions. [2023-12-21 13:32:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 112 [2023-12-21 13:32:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:09,571 INFO L225 Difference]: With dead ends: 469912 [2023-12-21 13:32:09,571 INFO L226 Difference]: Without dead ends: 265850 [2023-12-21 13:32:09,664 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 13:32:09,665 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 134 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:09,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 538 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:09,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265850 states. [2023-12-21 13:32:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265850 to 184800. [2023-12-21 13:32:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184800 states, 184799 states have (on average 1.362539840583553) internal successors, (251796), 184799 states have internal predecessors, (251796), 0 states have call successors, (0), 0 states 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 13:32:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184800 states to 184800 states and 251796 transitions. [2023-12-21 13:32:12,339 INFO L78 Accepts]: Start accepts. Automaton has 184800 states and 251796 transitions. Word has length 112 [2023-12-21 13:32:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:12,340 INFO L495 AbstractCegarLoop]: Abstraction has 184800 states and 251796 transitions. [2023-12-21 13:32:12,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 13:32:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 184800 states and 251796 transitions. [2023-12-21 13:32:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:32:12,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:12,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:12,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 13:32:12,357 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:12,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash -852203747, now seen corresponding path program 1 times [2023-12-21 13:32:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:12,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088798543] [2023-12-21 13:32:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:12,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 13:32:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088798543] [2023-12-21 13:32:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088798543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:12,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:12,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958700099] [2023-12-21 13:32:12,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:12,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:12,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:12,410 INFO L87 Difference]: Start difference. First operand 184800 states and 251796 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 13:32:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:13,996 INFO L93 Difference]: Finished difference Result 424302 states and 574348 transitions. [2023-12-21 13:32:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:13,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 112 [2023-12-21 13:32:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:14,365 INFO L225 Difference]: With dead ends: 424302 [2023-12-21 13:32:14,365 INFO L226 Difference]: Without dead ends: 240508 [2023-12-21 13:32:14,460 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 13:32:14,460 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 105 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 475 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 13:32:14,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 475 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240508 states. [2023-12-21 13:32:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240508 to 227172. [2023-12-21 13:32:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227172 states, 227171 states have (on average 1.336856376914307) internal successors, (303695), 227171 states have internal predecessors, (303695), 0 states have call successors, (0), 0 states 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 13:32:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227172 states to 227172 states and 303695 transitions. [2023-12-21 13:32:17,723 INFO L78 Accepts]: Start accepts. Automaton has 227172 states and 303695 transitions. Word has length 112 [2023-12-21 13:32:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:17,723 INFO L495 AbstractCegarLoop]: Abstraction has 227172 states and 303695 transitions. [2023-12-21 13:32:17,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 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 13:32:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 227172 states and 303695 transitions. [2023-12-21 13:32:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:32:17,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:17,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 13:32:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 13:32:17,736 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:17,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash 573392032, now seen corresponding path program 1 times [2023-12-21 13:32:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479182961] [2023-12-21 13:32:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:32:17,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:17,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479182961] [2023-12-21 13:32:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479182961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:17,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:17,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335367585] [2023-12-21 13:32:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:17,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:17,788 INFO L87 Difference]: Start difference. First operand 227172 states and 303695 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 13:32:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:19,717 INFO L93 Difference]: Finished difference Result 615134 states and 822156 transitions. [2023-12-21 13:32:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 13:32:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:20,360 INFO L225 Difference]: With dead ends: 615134 [2023-12-21 13:32:20,361 INFO L226 Difference]: Without dead ends: 372824 [2023-12-21 13:32:20,511 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 13:32:20,511 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 94 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 468 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 13:32:20,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 468 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372824 states. [2023-12-21 13:32:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372824 to 333934. [2023-12-21 13:32:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333934 states, 333933 states have (on average 1.3294283583832684) internal successors, (443940), 333933 states have internal predecessors, (443940), 0 states have call successors, (0), 0 states 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 13:32:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333934 states to 333934 states and 443940 transitions. [2023-12-21 13:32:25,925 INFO L78 Accepts]: Start accepts. Automaton has 333934 states and 443940 transitions. Word has length 113 [2023-12-21 13:32:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:25,926 INFO L495 AbstractCegarLoop]: Abstraction has 333934 states and 443940 transitions. [2023-12-21 13:32:25,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 13:32:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 333934 states and 443940 transitions. [2023-12-21 13:32:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 13:32:25,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:25,942 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:25,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 13:32:25,942 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:25,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash 196008926, now seen corresponding path program 1 times [2023-12-21 13:32:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:25,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051175840] [2023-12-21 13:32:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:25,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:26,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051175840] [2023-12-21 13:32:26,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051175840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:32:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290140958] [2023-12-21 13:32:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:26,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:32:26,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:32:26,116 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 13:32:26,121 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 13:32:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:26,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:32:26,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:32:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:27,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:32:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:28,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290140958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:32:28,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:32:28,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-21 13:32:28,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926077366] [2023-12-21 13:32:28,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:32:28,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:32:28,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:32:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:32:28,110 INFO L87 Difference]: Start difference. First operand 333934 states and 443940 transitions. Second operand has 32 states, 32 states have (on average 9.78125) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 13:32:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:57,408 INFO L93 Difference]: Finished difference Result 2745241 states and 3577891 transitions. [2023-12-21 13:32:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-12-21 13:32:57,409 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.78125) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 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 116 [2023-12-21 13:32:57,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:03,526 INFO L225 Difference]: With dead ends: 2745241 [2023-12-21 13:33:03,527 INFO L226 Difference]: Without dead ends: 2590977 [2023-12-21 13:33:03,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42547 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=15321, Invalid=82335, Unknown=0, NotChecked=0, Total=97656 [2023-12-21 13:33:03,995 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 15209 mSDsluCounter, 11359 mSDsCounter, 0 mSdLazyCounter, 9908 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15209 SdHoareTripleChecker+Valid, 12034 SdHoareTripleChecker+Invalid, 10042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 9908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:03,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15209 Valid, 12034 Invalid, 10042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 9908 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-21 13:33:06,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590977 states. [2023-12-21 13:33:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590977 to 622715. [2023-12-21 13:33:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622715 states, 622714 states have (on average 1.3240958128450622) internal successors, (824533), 622714 states have internal predecessors, (824533), 0 states have call successors, (0), 0 states 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 13:33:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622715 states to 622715 states and 824533 transitions. [2023-12-21 13:33:30,092 INFO L78 Accepts]: Start accepts. Automaton has 622715 states and 824533 transitions. Word has length 116 [2023-12-21 13:33:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:30,092 INFO L495 AbstractCegarLoop]: Abstraction has 622715 states and 824533 transitions. [2023-12-21 13:33:30,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.78125) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 13:33:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 622715 states and 824533 transitions. [2023-12-21 13:33:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 13:33:30,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:30,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:30,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:33:30,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:33:30,310 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:30,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash -137719032, now seen corresponding path program 1 times [2023-12-21 13:33:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089451772] [2023-12-21 13:33:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089451772] [2023-12-21 13:33:30,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089451772] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:33:30,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635181729] [2023-12-21 13:33:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:30,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:33:30,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:33:30,487 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 13:33:30,489 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 13:33:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:30,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:33:30,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:33:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:31,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:33:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635181729] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:33:32,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:33:32,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-21 13:33:32,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887814024] [2023-12-21 13:33:32,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:33:32,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:33:32,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:32,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:33:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:33:32,094 INFO L87 Difference]: Start difference. First operand 622715 states and 824533 transitions. Second operand has 32 states, 32 states have (on average 9.53125) internal successors, (305), 31 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 13:34:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:08,855 INFO L93 Difference]: Finished difference Result 5670299 states and 7456222 transitions. [2023-12-21 13:34:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-12-21 13:34:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.53125) internal successors, (305), 31 states have internal predecessors, (305), 0 states have call successors, (0), 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 116 [2023-12-21 13:34:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:29,722 INFO L225 Difference]: With dead ends: 5670299 [2023-12-21 13:34:29,723 INFO L226 Difference]: Without dead ends: 5427252 [2023-12-21 13:34:32,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40776 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=13786, Invalid=83870, Unknown=0, NotChecked=0, Total=97656 [2023-12-21 13:34:32,111 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 10639 mSDsluCounter, 12927 mSDsCounter, 0 mSdLazyCounter, 11476 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10639 SdHoareTripleChecker+Valid, 13425 SdHoareTripleChecker+Invalid, 11527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 11476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:32,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10639 Valid, 13425 Invalid, 11527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 11476 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 13:34:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5427252 states.