/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/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:01:23,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:01:23,895 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:01:23,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:01:23,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:01:23,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:01:23,937 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:01:23,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:01:23,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:01:23,942 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:01:23,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:01:23,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:01:23,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:01:23,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:01:23,946 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:01:23,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:01:23,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:01:23,946 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:01:23,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:01:23,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:01:23,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:01:23,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:01:23,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:01:23,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:01:23,948 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:01:23,949 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:01:23,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:01:23,949 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:01:23,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:01:23,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:01:23,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:01:23,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:01:23,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:01:23,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:01:23,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:01:23,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:01:23,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:01:23,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:01:23,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:01:23,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:01:23,953 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:01:23,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:01:23,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:01:23,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:01:24,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:01:24,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:01:24,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:01:24,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:01:24,213 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:01:24,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-12-16 01:01:25,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:01:25,914 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:01:25,915 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-12-16 01:01:25,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768a6c3a3/023b96f4c5ce4c17a884e4b495c46fdc/FLAG2101598d1 [2023-12-16 01:01:25,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768a6c3a3/023b96f4c5ce4c17a884e4b495c46fdc [2023-12-16 01:01:25,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:01:25,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:01:25,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:01:25,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:01:25,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:01:25,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:01:25" (1/1) ... [2023-12-16 01:01:25,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2576da4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:25, skipping insertion in model container [2023-12-16 01:01:25,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:01:25" (1/1) ... [2023-12-16 01:01:26,117 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:01:26,613 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[20426,20439] [2023-12-16 01:01:26,683 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[27362,27375] [2023-12-16 01:01:27,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:01:27,332 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:01:27,382 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[20426,20439] [2023-12-16 01:01:27,394 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c[27362,27375] [2023-12-16 01:01:27,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:01:27,782 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:01:27,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27 WrapperNode [2023-12-16 01:01:27,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:01:27,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:01:27,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:01:27,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:01:27,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:27,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,250 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5214 [2023-12-16 01:01:28,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:01:28,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:01:28,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:01:28,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:01:28,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,530 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]. [2023-12-16 01:01:28,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:01:28,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:01:28,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:01:28,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:01:28,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (1/1) ... [2023-12-16 01:01:28,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:01:28,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:01:28,882 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) [2023-12-16 01:01:28,894 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 [2023-12-16 01:01:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:01:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:01:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:01:28,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:01:29,040 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:01:29,042 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:01:32,989 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:01:33,061 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:01:33,062 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 01:01:33,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:01:33 BoogieIcfgContainer [2023-12-16 01:01:33,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:01:33,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:01:33,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:01:33,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:01:33,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:01:25" (1/3) ... [2023-12-16 01:01:33,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703b5209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:01:33, skipping insertion in model container [2023-12-16 01:01:33,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:01:27" (2/3) ... [2023-12-16 01:01:33,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703b5209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:01:33, skipping insertion in model container [2023-12-16 01:01:33,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:01:33" (3/3) ... [2023-12-16 01:01:33,070 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label05.c [2023-12-16 01:01:33,085 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:01:33,085 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 01:01:33,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:01:33,144 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;@508de4fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:01:33,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 01:01:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 01:01:33,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:33,160 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] [2023-12-16 01:01:33,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:33,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1979929519, now seen corresponding path program 1 times [2023-12-16 01:01:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805856676] [2023-12-16 01:01:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:33,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805856676] [2023-12-16 01:01:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805856676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:33,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:33,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:01:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224520021] [2023-12-16 01:01:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:33,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:01:33,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:01:33,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:01:33,455 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:33,569 INFO L93 Difference]: Finished difference Result 1676 states and 3294 transitions. [2023-12-16 01:01:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:01:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-16 01:01:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:33,597 INFO L225 Difference]: With dead ends: 1676 [2023-12-16 01:01:33,597 INFO L226 Difference]: Without dead ends: 861 [2023-12-16 01:01:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:01:33,606 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:33,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1629 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-16 01:01:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-16 01:01:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.8963911525029105) internal successors, (1629), 860 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1629 transitions. [2023-12-16 01:01:33,671 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1629 transitions. Word has length 25 [2023-12-16 01:01:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:33,671 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1629 transitions. [2023-12-16 01:01:33,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1629 transitions. [2023-12-16 01:01:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 01:01:33,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:33,673 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] [2023-12-16 01:01:33,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:01:33,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:33,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1892335951, now seen corresponding path program 1 times [2023-12-16 01:01:33,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:33,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800394347] [2023-12-16 01:01:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:33,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:34,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:34,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800394347] [2023-12-16 01:01:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800394347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:34,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:34,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:01:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753587259] [2023-12-16 01:01:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:34,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:01:34,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:01:34,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:01:34,052 INFO L87 Difference]: Start difference. First operand 861 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:34,169 INFO L93 Difference]: Finished difference Result 917 states and 1718 transitions. [2023-12-16 01:01:34,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:01:34,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-16 01:01:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:34,175 INFO L225 Difference]: With dead ends: 917 [2023-12-16 01:01:34,176 INFO L226 Difference]: Without dead ends: 861 [2023-12-16 01:01:34,177 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 [2023-12-16 01:01:34,178 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:34,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:01:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-16 01:01:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-12-16 01:01:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 859 states have (on average 1.838183934807916) internal successors, (1579), 860 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1579 transitions. [2023-12-16 01:01:34,203 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1579 transitions. Word has length 25 [2023-12-16 01:01:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:34,204 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1579 transitions. [2023-12-16 01:01:34,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1579 transitions. [2023-12-16 01:01:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 01:01:34,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:34,212 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] [2023-12-16 01:01:34,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:01:34,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:34,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2121093177, now seen corresponding path program 1 times [2023-12-16 01:01:34,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:34,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143283749] [2023-12-16 01:01:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:34,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:34,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143283749] [2023-12-16 01:01:34,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143283749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:34,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:34,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:34,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340275430] [2023-12-16 01:01:34,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:34,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:01:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:34,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:01:34,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:01:34,490 INFO L87 Difference]: Start difference. First operand 861 states and 1579 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:40,445 INFO L93 Difference]: Finished difference Result 3116 states and 5888 transitions. [2023-12-16 01:01:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:01:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-16 01:01:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:40,460 INFO L225 Difference]: With dead ends: 3116 [2023-12-16 01:01:40,460 INFO L226 Difference]: Without dead ends: 2363 [2023-12-16 01:01:40,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:01:40,463 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2462 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:40,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 848 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-16 01:01:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-12-16 01:01:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2363. [2023-12-16 01:01:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.5692503176620076) internal successors, (3705), 2362 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3705 transitions. [2023-12-16 01:01:40,527 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3705 transitions. Word has length 59 [2023-12-16 01:01:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:40,527 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3705 transitions. [2023-12-16 01:01:40,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3705 transitions. [2023-12-16 01:01:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 01:01:40,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:40,529 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] [2023-12-16 01:01:40,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:01:40,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:40,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1140961112, now seen corresponding path program 1 times [2023-12-16 01:01:40,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:40,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133747394] [2023-12-16 01:01:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:40,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:40,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133747394] [2023-12-16 01:01:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133747394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:40,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:40,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:01:40,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154663074] [2023-12-16 01:01:40,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:01:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:01:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:01:40,722 INFO L87 Difference]: Start difference. First operand 2363 states and 3705 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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) [2023-12-16 01:01:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:41,136 INFO L93 Difference]: Finished difference Result 3105 states and 4909 transitions. [2023-12-16 01:01:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:01:41,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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 [2023-12-16 01:01:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:41,148 INFO L225 Difference]: With dead ends: 3105 [2023-12-16 01:01:41,148 INFO L226 Difference]: Without dead ends: 3052 [2023-12-16 01:01:41,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-16 01:01:41,150 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:41,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 01:01:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2023-12-16 01:01:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2414. [2023-12-16 01:01:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2412 states have (on average 1.570480928689884) internal successors, (3788), 2413 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3788 transitions. [2023-12-16 01:01:41,243 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3788 transitions. Word has length 74 [2023-12-16 01:01:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:41,243 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3788 transitions. [2023-12-16 01:01:41,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 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) [2023-12-16 01:01:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3788 transitions. [2023-12-16 01:01:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 01:01:41,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:41,245 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] [2023-12-16 01:01:41,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:01:41,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:41,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1369648648, now seen corresponding path program 1 times [2023-12-16 01:01:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663197234] [2023-12-16 01:01:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:41,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:41,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663197234] [2023-12-16 01:01:41,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663197234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:41,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:41,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:41,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049031902] [2023-12-16 01:01:41,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:41,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:41,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:41,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:41,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:41,323 INFO L87 Difference]: Start difference. First operand 2414 states and 3788 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2023-12-16 01:01:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:41,364 INFO L93 Difference]: Finished difference Result 2611 states and 4107 transitions. [2023-12-16 01:01:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:41,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 [2023-12-16 01:01:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:41,376 INFO L225 Difference]: With dead ends: 2611 [2023-12-16 01:01:41,376 INFO L226 Difference]: Without dead ends: 2507 [2023-12-16 01:01:41,377 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 [2023-12-16 01:01:41,378 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:41,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2023-12-16 01:01:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2505. [2023-12-16 01:01:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2503 states have (on average 1.5717139432680782) internal successors, (3934), 2504 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3934 transitions. [2023-12-16 01:01:41,439 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3934 transitions. Word has length 76 [2023-12-16 01:01:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:41,440 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3934 transitions. [2023-12-16 01:01:41,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2023-12-16 01:01:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3934 transitions. [2023-12-16 01:01:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 01:01:41,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:41,441 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] [2023-12-16 01:01:41,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:01:41,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:41,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1367503696, now seen corresponding path program 1 times [2023-12-16 01:01:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:41,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146801642] [2023-12-16 01:01:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:41,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146801642] [2023-12-16 01:01:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146801642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:41,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:41,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:01:41,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862654456] [2023-12-16 01:01:41,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:41,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:01:41,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:01:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:01:41,755 INFO L87 Difference]: Start difference. First operand 2505 states and 3934 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2023-12-16 01:01:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:42,072 INFO L93 Difference]: Finished difference Result 2702 states and 4250 transitions. [2023-12-16 01:01:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:01:42,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 [2023-12-16 01:01:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:42,083 INFO L225 Difference]: With dead ends: 2702 [2023-12-16 01:01:42,084 INFO L226 Difference]: Without dead ends: 2507 [2023-12-16 01:01:42,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-16 01:01:42,086 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 1557 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:42,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2148 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:01:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2023-12-16 01:01:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2505. [2023-12-16 01:01:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2503 states have (on average 1.570914902117459) internal successors, (3932), 2504 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3932 transitions. [2023-12-16 01:01:42,138 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3932 transitions. Word has length 76 [2023-12-16 01:01:42,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:42,138 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3932 transitions. [2023-12-16 01:01:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2023-12-16 01:01:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3932 transitions. [2023-12-16 01:01:42,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 01:01:42,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:42,140 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] [2023-12-16 01:01:42,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:01:42,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:42,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash 428703861, now seen corresponding path program 1 times [2023-12-16 01:01:42,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:42,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895362936] [2023-12-16 01:01:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:42,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:42,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:42,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895362936] [2023-12-16 01:01:42,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895362936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:42,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:42,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:01:42,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804566843] [2023-12-16 01:01:42,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:42,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:01:42,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:01:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:01:42,316 INFO L87 Difference]: Start difference. First operand 2505 states and 3932 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2023-12-16 01:01:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:42,360 INFO L93 Difference]: Finished difference Result 2513 states and 3941 transitions. [2023-12-16 01:01:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:01:42,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 [2023-12-16 01:01:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:42,370 INFO L225 Difference]: With dead ends: 2513 [2023-12-16 01:01:42,371 INFO L226 Difference]: Without dead ends: 2511 [2023-12-16 01:01:42,372 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 [2023-12-16 01:01:42,372 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:42,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2023-12-16 01:01:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2509. [2023-12-16 01:01:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2507 states have (on average 1.5696051057040288) internal successors, (3935), 2508 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3935 transitions. [2023-12-16 01:01:42,429 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3935 transitions. Word has length 77 [2023-12-16 01:01:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:42,429 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3935 transitions. [2023-12-16 01:01:42,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2023-12-16 01:01:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3935 transitions. [2023-12-16 01:01:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:01:42,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:42,431 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] [2023-12-16 01:01:42,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:01:42,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:42,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:42,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1012840592, now seen corresponding path program 1 times [2023-12-16 01:01:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:42,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206077250] [2023-12-16 01:01:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:42,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206077250] [2023-12-16 01:01:42,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206077250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:42,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:42,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387029007] [2023-12-16 01:01:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:42,488 INFO L87 Difference]: Start difference. First operand 2509 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:42,527 INFO L93 Difference]: Finished difference Result 2719 states and 4268 transitions. [2023-12-16 01:01:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 01:01:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:42,539 INFO L225 Difference]: With dead ends: 2719 [2023-12-16 01:01:42,539 INFO L226 Difference]: Without dead ends: 2611 [2023-12-16 01:01:42,541 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 [2023-12-16 01:01:42,542 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:42,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2023-12-16 01:01:42,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2609. [2023-12-16 01:01:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2607 states have (on average 1.5696202531645569) internal successors, (4092), 2608 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4092 transitions. [2023-12-16 01:01:42,604 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4092 transitions. Word has length 78 [2023-12-16 01:01:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:42,604 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 4092 transitions. [2023-12-16 01:01:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4092 transitions. [2023-12-16 01:01:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:01:42,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:42,605 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] [2023-12-16 01:01:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:01:42,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:42,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash -257456528, now seen corresponding path program 1 times [2023-12-16 01:01:42,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:42,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128089762] [2023-12-16 01:01:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:42,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:42,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128089762] [2023-12-16 01:01:42,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128089762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:42,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:42,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549902066] [2023-12-16 01:01:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:42,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:42,700 INFO L87 Difference]: Start difference. First operand 2609 states and 4092 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:42,744 INFO L93 Difference]: Finished difference Result 3179 states and 4992 transitions. [2023-12-16 01:01:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:42,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 01:01:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:42,755 INFO L225 Difference]: With dead ends: 3179 [2023-12-16 01:01:42,757 INFO L226 Difference]: Without dead ends: 2882 [2023-12-16 01:01:42,759 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 [2023-12-16 01:01:42,761 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:42,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2023-12-16 01:01:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2880. [2023-12-16 01:01:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.5684503127171647) internal successors, (4514), 2879 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4514 transitions. [2023-12-16 01:01:42,832 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4514 transitions. Word has length 78 [2023-12-16 01:01:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:42,833 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 4514 transitions. [2023-12-16 01:01:42,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4514 transitions. [2023-12-16 01:01:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:01:42,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:42,834 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] [2023-12-16 01:01:42,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:01:42,834 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:42,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash -667843216, now seen corresponding path program 1 times [2023-12-16 01:01:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:42,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299532602] [2023-12-16 01:01:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:42,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299532602] [2023-12-16 01:01:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299532602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:42,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:42,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:42,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063821805] [2023-12-16 01:01:42,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:42,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:42,888 INFO L87 Difference]: Start difference. First operand 2880 states and 4514 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:42,939 INFO L93 Difference]: Finished difference Result 3968 states and 6216 transitions. [2023-12-16 01:01:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 01:01:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:42,952 INFO L225 Difference]: With dead ends: 3968 [2023-12-16 01:01:42,952 INFO L226 Difference]: Without dead ends: 3400 [2023-12-16 01:01:42,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:42,955 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:42,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2023-12-16 01:01:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3398. [2023-12-16 01:01:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 3396 states have (on average 1.5636042402826855) internal successors, (5310), 3397 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 5310 transitions. [2023-12-16 01:01:43,037 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 5310 transitions. Word has length 78 [2023-12-16 01:01:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:43,037 INFO L495 AbstractCegarLoop]: Abstraction has 3398 states and 5310 transitions. [2023-12-16 01:01:43,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 5310 transitions. [2023-12-16 01:01:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:01:43,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:43,038 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] [2023-12-16 01:01:43,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:01:43,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:43,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash -936426384, now seen corresponding path program 1 times [2023-12-16 01:01:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:43,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258584187] [2023-12-16 01:01:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:43,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:43,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258584187] [2023-12-16 01:01:43,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258584187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:43,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:43,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016766808] [2023-12-16 01:01:43,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:43,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:43,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:43,092 INFO L87 Difference]: Start difference. First operand 3398 states and 5310 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:43,237 INFO L93 Difference]: Finished difference Result 5474 states and 8520 transitions. [2023-12-16 01:01:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 01:01:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:43,248 INFO L225 Difference]: With dead ends: 5474 [2023-12-16 01:01:43,248 INFO L226 Difference]: Without dead ends: 4388 [2023-12-16 01:01:43,251 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 [2023-12-16 01:01:43,251 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:43,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2023-12-16 01:01:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 4386. [2023-12-16 01:01:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.552463503649635) internal successors, (6806), 4385 states have internal predecessors, (6806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 6806 transitions. [2023-12-16 01:01:43,362 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 6806 transitions. Word has length 78 [2023-12-16 01:01:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:43,363 INFO L495 AbstractCegarLoop]: Abstraction has 4386 states and 6806 transitions. [2023-12-16 01:01:43,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 6806 transitions. [2023-12-16 01:01:43,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:01:43,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:43,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:01:43,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:01:43,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:43,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1522138512, now seen corresponding path program 1 times [2023-12-16 01:01:43,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:43,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633307741] [2023-12-16 01:01:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:43,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:43,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633307741] [2023-12-16 01:01:43,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633307741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:43,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:43,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276441255] [2023-12-16 01:01:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:43,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:43,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:43,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:43,430 INFO L87 Difference]: Start difference. First operand 4386 states and 6806 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:43,541 INFO L93 Difference]: Finished difference Result 8342 states and 12840 transitions. [2023-12-16 01:01:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:43,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 01:01:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:43,555 INFO L225 Difference]: With dead ends: 8342 [2023-12-16 01:01:43,555 INFO L226 Difference]: Without dead ends: 6268 [2023-12-16 01:01:43,559 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 [2023-12-16 01:01:43,560 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:43,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2023-12-16 01:01:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 6266. [2023-12-16 01:01:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 6264 states have (on average 1.5335249042145593) internal successors, (9606), 6265 states have internal predecessors, (9606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 9606 transitions. [2023-12-16 01:01:43,724 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 9606 transitions. Word has length 78 [2023-12-16 01:01:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:43,724 INFO L495 AbstractCegarLoop]: Abstraction has 6266 states and 9606 transitions. [2023-12-16 01:01:43,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 9606 transitions. [2023-12-16 01:01:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:01:43,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:43,726 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] [2023-12-16 01:01:43,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:01:43,726 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:43,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash -633405072, now seen corresponding path program 1 times [2023-12-16 01:01:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918078859] [2023-12-16 01:01:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:43,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918078859] [2023-12-16 01:01:43,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918078859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:43,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:43,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10570606] [2023-12-16 01:01:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:43,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:43,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:43,789 INFO L87 Difference]: Start difference. First operand 6266 states and 9606 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:43,964 INFO L93 Difference]: Finished difference Result 13790 states and 20904 transitions. [2023-12-16 01:01:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:43,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 01:01:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:43,983 INFO L225 Difference]: With dead ends: 13790 [2023-12-16 01:01:43,984 INFO L226 Difference]: Without dead ends: 9836 [2023-12-16 01:01:43,991 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 [2023-12-16 01:01:43,992 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:43,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2023-12-16 01:01:44,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 9834. [2023-12-16 01:01:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9834 states, 9832 states have (on average 1.507526444263629) internal successors, (14822), 9833 states have internal predecessors, (14822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9834 states to 9834 states and 14822 transitions. [2023-12-16 01:01:44,255 INFO L78 Accepts]: Start accepts. Automaton has 9834 states and 14822 transitions. Word has length 78 [2023-12-16 01:01:44,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:44,255 INFO L495 AbstractCegarLoop]: Abstraction has 9834 states and 14822 transitions. [2023-12-16 01:01:44,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9834 states and 14822 transitions. [2023-12-16 01:01:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:01:44,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:44,258 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] [2023-12-16 01:01:44,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:01:44,258 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:44,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:44,259 INFO L85 PathProgramCache]: Analyzing trace with hash -896482448, now seen corresponding path program 1 times [2023-12-16 01:01:44,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:44,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291508564] [2023-12-16 01:01:44,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:01:44,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:44,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291508564] [2023-12-16 01:01:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291508564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:44,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:01:44,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330294122] [2023-12-16 01:01:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:44,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:01:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:01:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:01:44,316 INFO L87 Difference]: Start difference. First operand 9834 states and 14822 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:44,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:44,669 INFO L93 Difference]: Finished difference Result 24110 states and 35880 transitions. [2023-12-16 01:01:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:01:44,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-16 01:01:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:44,702 INFO L225 Difference]: With dead ends: 24110 [2023-12-16 01:01:44,703 INFO L226 Difference]: Without dead ends: 16588 [2023-12-16 01:01:44,717 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 [2023-12-16 01:01:44,717 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:44,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:01:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16588 states. [2023-12-16 01:01:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16588 to 16586. [2023-12-16 01:01:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16586 states, 16584 states have (on average 1.4764833574529668) internal successors, (24486), 16585 states have internal predecessors, (24486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16586 states to 16586 states and 24486 transitions. [2023-12-16 01:01:45,230 INFO L78 Accepts]: Start accepts. Automaton has 16586 states and 24486 transitions. Word has length 78 [2023-12-16 01:01:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:45,230 INFO L495 AbstractCegarLoop]: Abstraction has 16586 states and 24486 transitions. [2023-12-16 01:01:45,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 16586 states and 24486 transitions. [2023-12-16 01:01:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 01:01:45,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:45,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:01:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:01:45,236 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:45,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 758003716, now seen corresponding path program 1 times [2023-12-16 01:01:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:45,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419598517] [2023-12-16 01:01:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 01:01:45,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:45,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419598517] [2023-12-16 01:01:45,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419598517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:45,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:01:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867004479] [2023-12-16 01:01:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:01:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:01:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:01:45,440 INFO L87 Difference]: Start difference. First operand 16586 states and 24486 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:47,830 INFO L93 Difference]: Finished difference Result 115098 states and 168430 transitions. [2023-12-16 01:01:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:01:47,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-16 01:01:47,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:48,120 INFO L225 Difference]: With dead ends: 115098 [2023-12-16 01:01:48,121 INFO L226 Difference]: Without dead ends: 105112 [2023-12-16 01:01:48,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:01:48,158 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9843 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9843 SdHoareTripleChecker+Valid, 4635 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:48,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9843 Valid, 4635 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 01:01:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105112 states. [2023-12-16 01:01:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105112 to 28746. [2023-12-16 01:01:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28746 states, 28744 states have (on average 1.4641664347342054) internal successors, (42086), 28745 states have internal predecessors, (42086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28746 states to 28746 states and 42086 transitions. [2023-12-16 01:01:49,601 INFO L78 Accepts]: Start accepts. Automaton has 28746 states and 42086 transitions. Word has length 100 [2023-12-16 01:01:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:49,602 INFO L495 AbstractCegarLoop]: Abstraction has 28746 states and 42086 transitions. [2023-12-16 01:01:49,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 28746 states and 42086 transitions. [2023-12-16 01:01:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 01:01:49,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:49,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:01:49,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 01:01:49,608 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:49,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1513387780, now seen corresponding path program 1 times [2023-12-16 01:01:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:49,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41024656] [2023-12-16 01:01:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:49,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 01:01:50,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:50,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41024656] [2023-12-16 01:01:50,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41024656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:50,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:01:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554872516] [2023-12-16 01:01:50,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:50,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:01:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:01:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:01:50,029 INFO L87 Difference]: Start difference. First operand 28746 states and 42086 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 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) [2023-12-16 01:01:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:52,585 INFO L93 Difference]: Finished difference Result 129370 states and 189166 transitions. [2023-12-16 01:01:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:01:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 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 100 [2023-12-16 01:01:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:52,854 INFO L225 Difference]: With dead ends: 129370 [2023-12-16 01:01:52,854 INFO L226 Difference]: Without dead ends: 115096 [2023-12-16 01:01:52,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:01:52,904 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9847 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9847 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:52,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9847 Valid, 4570 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:01:53,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115096 states. [2023-12-16 01:01:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115096 to 48010. [2023-12-16 01:01:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48010 states, 48008 states have (on average 1.4565489085152474) internal successors, (69926), 48009 states have internal predecessors, (69926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48010 states to 48010 states and 69926 transitions. [2023-12-16 01:01:55,042 INFO L78 Accepts]: Start accepts. Automaton has 48010 states and 69926 transitions. Word has length 100 [2023-12-16 01:01:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:01:55,044 INFO L495 AbstractCegarLoop]: Abstraction has 48010 states and 69926 transitions. [2023-12-16 01:01:55,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 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) [2023-12-16 01:01:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 48010 states and 69926 transitions. [2023-12-16 01:01:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 01:01:55,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:01:55,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:01:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:01:55,051 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:01:55,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:01:55,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1103001092, now seen corresponding path program 1 times [2023-12-16 01:01:55,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:01:55,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682914772] [2023-12-16 01:01:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:01:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:01:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:01:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:01:55,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:01:55,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682914772] [2023-12-16 01:01:55,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682914772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:01:55,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:01:55,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:01:55,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161133799] [2023-12-16 01:01:55,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:01:55,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:01:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:01:55,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:01:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:01:55,260 INFO L87 Difference]: Start difference. First operand 48010 states and 69926 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:01:58,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:01:58,398 INFO L93 Difference]: Finished difference Result 143642 states and 209838 transitions. [2023-12-16 01:01:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:01:58,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-16 01:01:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:01:58,653 INFO L225 Difference]: With dead ends: 143642 [2023-12-16 01:01:58,653 INFO L226 Difference]: Without dead ends: 129368 [2023-12-16 01:01:58,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:01:58,712 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9866 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9866 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:01:58,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9866 Valid, 4536 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:01:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129368 states. [2023-12-16 01:02:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129368 to 62282. [2023-12-16 01:02:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62282 states, 62280 states have (on average 1.4546885035324342) internal successors, (90598), 62281 states have internal predecessors, (90598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:01,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62282 states to 62282 states and 90598 transitions. [2023-12-16 01:02:01,474 INFO L78 Accepts]: Start accepts. Automaton has 62282 states and 90598 transitions. Word has length 100 [2023-12-16 01:02:01,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:02:01,475 INFO L495 AbstractCegarLoop]: Abstraction has 62282 states and 90598 transitions. [2023-12-16 01:02:01,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 62282 states and 90598 transitions. [2023-12-16 01:02:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 01:02:01,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:02:01,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:02:01,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 01:02:01,488 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:02:01,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:02:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash 834417924, now seen corresponding path program 1 times [2023-12-16 01:02:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:02:01,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600375462] [2023-12-16 01:02:01,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:02:01,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:02:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:02:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 01:02:01,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:02:01,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600375462] [2023-12-16 01:02:01,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600375462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:02:01,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:02:01,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:02:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905148064] [2023-12-16 01:02:01,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:02:01,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:02:01,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:02:01,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:02:01,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:02:01,684 INFO L87 Difference]: Start difference. First operand 62282 states and 90598 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:02:05,607 INFO L93 Difference]: Finished difference Result 157914 states and 230510 transitions. [2023-12-16 01:02:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:02:05,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-16 01:02:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:02:05,824 INFO L225 Difference]: With dead ends: 157914 [2023-12-16 01:02:05,825 INFO L226 Difference]: Without dead ends: 143640 [2023-12-16 01:02:05,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:02:05,858 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9955 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9955 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:02:05,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9955 Valid, 4453 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:02:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143640 states. [2023-12-16 01:02:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143640 to 76554. [2023-12-16 01:02:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76554 states, 76552 states have (on average 1.45352178911067) internal successors, (111270), 76553 states have internal predecessors, (111270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76554 states to 76554 states and 111270 transitions. [2023-12-16 01:02:08,798 INFO L78 Accepts]: Start accepts. Automaton has 76554 states and 111270 transitions. Word has length 100 [2023-12-16 01:02:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:02:08,798 INFO L495 AbstractCegarLoop]: Abstraction has 76554 states and 111270 transitions. [2023-12-16 01:02:08,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:08,798 INFO L276 IsEmpty]: Start isEmpty. Operand 76554 states and 111270 transitions. [2023-12-16 01:02:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 01:02:08,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:02:08,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:02:08,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 01:02:08,806 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:02:08,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:02:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash 248705796, now seen corresponding path program 1 times [2023-12-16 01:02:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:02:08,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320622578] [2023-12-16 01:02:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:02:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:02:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:02:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 01:02:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:02:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320622578] [2023-12-16 01:02:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320622578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:02:08,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:02:08,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:02:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938512606] [2023-12-16 01:02:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:02:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:02:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:02:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:02:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:02:08,978 INFO L87 Difference]: Start difference. First operand 76554 states and 111270 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:02:13,383 INFO L93 Difference]: Finished difference Result 172186 states and 251182 transitions. [2023-12-16 01:02:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:02:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-16 01:02:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:02:13,607 INFO L225 Difference]: With dead ends: 172186 [2023-12-16 01:02:13,607 INFO L226 Difference]: Without dead ends: 157912 [2023-12-16 01:02:13,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:02:13,655 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10038 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10038 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:02:13,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10038 Valid, 4489 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:02:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157912 states. [2023-12-16 01:02:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157912 to 90826. [2023-12-16 01:02:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90826 states, 90824 states have (on average 1.4527217475557122) internal successors, (131942), 90825 states have internal predecessors, (131942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90826 states to 90826 states and 131942 transitions. [2023-12-16 01:02:17,187 INFO L78 Accepts]: Start accepts. Automaton has 90826 states and 131942 transitions. Word has length 100 [2023-12-16 01:02:17,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:02:17,188 INFO L495 AbstractCegarLoop]: Abstraction has 90826 states and 131942 transitions. [2023-12-16 01:02:17,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:02:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 90826 states and 131942 transitions. [2023-12-16 01:02:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-16 01:02:17,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:02:17,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:02:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:02:17,198 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:02:17,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:02:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1137439236, now seen corresponding path program 1 times [2023-12-16 01:02:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:02:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095980656] [2023-12-16 01:02:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:02:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:02:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:02:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 01:02:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:02:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095980656] [2023-12-16 01:02:17,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095980656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:02:17,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:02:17,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:02:17,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432971111] [2023-12-16 01:02:17,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:02:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:02:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:02:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:02:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:02:17,449 INFO L87 Difference]: Start difference. First operand 90826 states and 131942 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 01:02:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 01:02:19,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-16 01:02:19,671 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2002 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:02:19,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2002 Valid, 1858 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:02:19,673 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 01:02:19,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:02:19,674 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (90826states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (99799 states constructed, input type IntersectNwa). [2023-12-16 01:02:19,676 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 01:02:19,679 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:02:19,681 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:02:19,685 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:02:19,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:02:19 BoogieIcfgContainer [2023-12-16 01:02:19,687 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:02:19,687 INFO L158 Benchmark]: Toolchain (without parser) took 53711.29ms. Allocated memory was 275.8MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 206.4MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-16 01:02:19,687 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 202.4MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:02:19,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1803.66ms. Allocated memory is still 275.8MB. Free memory was 205.8MB in the beginning and 118.0MB in the end (delta: 87.9MB). Peak memory consumption was 88.9MB. Max. memory is 8.0GB. [2023-12-16 01:02:19,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 465.93ms. Allocated memory is still 275.8MB. Free memory was 118.0MB in the beginning and 170.2MB in the end (delta: -52.2MB). Peak memory consumption was 68.9MB. Max. memory is 8.0GB. [2023-12-16 01:02:19,688 INFO L158 Benchmark]: Boogie Preprocessor took 592.77ms. Allocated memory was 275.8MB in the beginning and 438.3MB in the end (delta: 162.5MB). Free memory was 170.2MB in the beginning and 302.3MB in the end (delta: -132.1MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. [2023-12-16 01:02:19,688 INFO L158 Benchmark]: RCFGBuilder took 4217.32ms. Allocated memory was 438.3MB in the beginning and 683.7MB in the end (delta: 245.4MB). Free memory was 302.3MB in the beginning and 502.6MB in the end (delta: -200.3MB). Peak memory consumption was 159.4MB. Max. memory is 8.0GB. [2023-12-16 01:02:19,689 INFO L158 Benchmark]: TraceAbstraction took 46622.09ms. Allocated memory was 683.7MB in the beginning and 6.1GB in the end (delta: 5.5GB). Free memory was 501.5MB in the beginning and 4.4GB in the end (delta: -3.9GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-16 01:02:19,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 202.4MB. Free memory is still 150.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1803.66ms. Allocated memory is still 275.8MB. Free memory was 205.8MB in the beginning and 118.0MB in the end (delta: 87.9MB). Peak memory consumption was 88.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 465.93ms. Allocated memory is still 275.8MB. Free memory was 118.0MB in the beginning and 170.2MB in the end (delta: -52.2MB). Peak memory consumption was 68.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 592.77ms. Allocated memory was 275.8MB in the beginning and 438.3MB in the end (delta: 162.5MB). Free memory was 170.2MB in the beginning and 302.3MB in the end (delta: -132.1MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. * RCFGBuilder took 4217.32ms. Allocated memory was 438.3MB in the beginning and 683.7MB in the end (delta: 245.4MB). Free memory was 302.3MB in the beginning and 502.6MB in the end (delta: -200.3MB). Peak memory consumption was 159.4MB. Max. memory is 8.0GB. * TraceAbstraction took 46622.09ms. Allocated memory was 683.7MB in the beginning and 6.1GB in the end (delta: 5.5GB). Free memory was 501.5MB in the beginning and 4.4GB in the end (delta: -3.9GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 593]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 593). Cancelled while NwaCegarLoop was constructing difference of abstraction (90826states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (99799 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 788]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 788). Cancelled while NwaCegarLoop was constructing difference of abstraction (90826states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (99799 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 865 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 46.6s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 28.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79098 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79098 mSDsluCounter, 57571 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27091 mSDsCounter, 1214 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7456 IncrementalHoareTripleChecker+Invalid, 8670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1214 mSolverCounterUnsat, 30480 mSDtfsCounter, 7456 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90826occurred in iteration=19, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 345368 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1558 NumberOfCodeBlocks, 1558 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1538 ConstructedInterpolants, 0 QuantifiedInterpolants, 10125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 108/108 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown