/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:16:52,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:16:52,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:16:52,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:16:52,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:16:52,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:16:52,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:16:52,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:16:52,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:16:52,966 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:16:52,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:16:52,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:16:52,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:16:52,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:16:52,969 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:16:52,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:16:52,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:16:52,969 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:16:52,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:16:52,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:16:52,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:16:52,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:16:52,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:16:52,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:16:52,971 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:16:52,971 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:16:52,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:16:52,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:16:52,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:16:52,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:16:52,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:16:52,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:16:52,973 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:16:52,974 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:16:52,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:16:52,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:16:52,974 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:16:53,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:16:53,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:16:53,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:16:53,171 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:16:53,173 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:16:53,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:16:54,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:16:54,429 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:16:54,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:16:54,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5b1dfad/78e5c34c443e41e08cced943f42d2bdd/FLAGbf8b2ac60 [2023-12-21 14:16:54,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5b1dfad/78e5c34c443e41e08cced943f42d2bdd [2023-12-21 14:16:54,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:16:54,452 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:16:54,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:16:54,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:16:54,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:16:54,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f51d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54, skipping insertion in model container [2023-12-21 14:16:54,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,507 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:16:54,677 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7667,7680] [2023-12-21 14:16:54,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:16:54,709 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:16:54,740 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7667,7680] [2023-12-21 14:16:54,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:16:54,767 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:16:54,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54 WrapperNode [2023-12-21 14:16:54,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:16:54,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:16:54,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:16:54,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:16:54,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,816 INFO L138 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 617 [2023-12-21 14:16:54,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:16:54,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:16:54,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:16:54,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:16:54,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,843 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 14:16:54,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:16:54,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:16:54,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:16:54,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:16:54,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (1/1) ... [2023-12-21 14:16:54,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:16:54,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:16:54,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 14:16:54,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 14:16:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:16:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:16:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:16:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:16:55,037 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:16:55,039 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:16:55,411 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:16:55,439 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:16:55,439 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:16:55,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:55 BoogieIcfgContainer [2023-12-21 14:16:55,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:16:55,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:16:55,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:16:55,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:16:55,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:16:54" (1/3) ... [2023-12-21 14:16:55,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4b156d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:55, skipping insertion in model container [2023-12-21 14:16:55,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:54" (2/3) ... [2023-12-21 14:16:55,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4b156d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:55, skipping insertion in model container [2023-12-21 14:16:55,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:55" (3/3) ... [2023-12-21 14:16:55,447 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:16:55,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:16:55,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:16:55,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:16:55,505 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;@51146e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:16:55,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:16:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 135 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 14:16:55,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:55,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:55,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:55,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1650403791, now seen corresponding path program 1 times [2023-12-21 14:16:55,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:55,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278084319] [2023-12-21 14:16:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:55,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278084319] [2023-12-21 14:16:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278084319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:55,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:55,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:55,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545961345] [2023-12-21 14:16:55,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:55,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:55,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:55,872 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 135 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:55,922 INFO L93 Difference]: Finished difference Result 296 states and 486 transitions. [2023-12-21 14:16:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:55,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-21 14:16:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:55,932 INFO L225 Difference]: With dead ends: 296 [2023-12-21 14:16:55,932 INFO L226 Difference]: Without dead ends: 208 [2023-12-21 14:16:55,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:55,937 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 158 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 463 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 [2023-12-21 14:16:55,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 463 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-21 14:16:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2023-12-21 14:16:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.448780487804878) internal successors, (297), 205 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 297 transitions. [2023-12-21 14:16:55,974 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 297 transitions. Word has length 86 [2023-12-21 14:16:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:55,975 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 297 transitions. [2023-12-21 14:16:55,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 297 transitions. [2023-12-21 14:16:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 14:16:55,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:55,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:55,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:16:55,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:55,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash 890764243, now seen corresponding path program 1 times [2023-12-21 14:16:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445635569] [2023-12-21 14:16:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:56,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:56,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445635569] [2023-12-21 14:16:56,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445635569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:56,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:56,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458823227] [2023-12-21 14:16:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:56,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:56,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,153 INFO L87 Difference]: Start difference. First operand 206 states and 297 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:56,180 INFO L93 Difference]: Finished difference Result 498 states and 761 transitions. [2023-12-21 14:16:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:56,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 14:16:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:56,187 INFO L225 Difference]: With dead ends: 498 [2023-12-21 14:16:56,187 INFO L226 Difference]: Without dead ends: 344 [2023-12-21 14:16:56,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,188 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 110 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:56,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:56,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-21 14:16:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2023-12-21 14:16:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 341 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 513 transitions. [2023-12-21 14:16:56,201 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 513 transitions. Word has length 87 [2023-12-21 14:16:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:56,202 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 513 transitions. [2023-12-21 14:16:56,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 513 transitions. [2023-12-21 14:16:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 14:16:56,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:56,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:56,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:16:56,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:56,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1471057757, now seen corresponding path program 1 times [2023-12-21 14:16:56,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:56,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133689578] [2023-12-21 14:16:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133689578] [2023-12-21 14:16:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133689578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:56,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:56,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577155498] [2023-12-21 14:16:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:56,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,278 INFO L87 Difference]: Start difference. First operand 342 states and 513 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:56,294 INFO L93 Difference]: Finished difference Result 890 states and 1383 transitions. [2023-12-21 14:16:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:56,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-21 14:16:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:56,296 INFO L225 Difference]: With dead ends: 890 [2023-12-21 14:16:56,296 INFO L226 Difference]: Without dead ends: 600 [2023-12-21 14:16:56,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,298 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 105 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:56,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 396 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-12-21 14:16:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2023-12-21 14:16:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.5360134003350083) internal successors, (917), 597 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 917 transitions. [2023-12-21 14:16:56,312 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 917 transitions. Word has length 88 [2023-12-21 14:16:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:56,318 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 917 transitions. [2023-12-21 14:16:56,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 917 transitions. [2023-12-21 14:16:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 14:16:56,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:56,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:56,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:16:56,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:56,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash 150999361, now seen corresponding path program 1 times [2023-12-21 14:16:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:56,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529249865] [2023-12-21 14:16:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:56,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529249865] [2023-12-21 14:16:56,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529249865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:56,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:56,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:56,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064236125] [2023-12-21 14:16:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:56,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,422 INFO L87 Difference]: Start difference. First operand 598 states and 917 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:56,437 INFO L93 Difference]: Finished difference Result 1626 states and 2543 transitions. [2023-12-21 14:16:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:56,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 14:16:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:56,441 INFO L225 Difference]: With dead ends: 1626 [2023-12-21 14:16:56,441 INFO L226 Difference]: Without dead ends: 1080 [2023-12-21 14:16:56,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,447 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 100 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:56,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 392 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-12-21 14:16:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2023-12-21 14:16:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 1.5496750232126277) internal successors, (1669), 1077 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1669 transitions. [2023-12-21 14:16:56,464 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1669 transitions. Word has length 89 [2023-12-21 14:16:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:56,465 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1669 transitions. [2023-12-21 14:16:56,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1669 transitions. [2023-12-21 14:16:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 14:16:56,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:56,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:56,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:16:56,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:56,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1554324511, now seen corresponding path program 1 times [2023-12-21 14:16:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:56,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442231577] [2023-12-21 14:16:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:56,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:56,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442231577] [2023-12-21 14:16:56,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442231577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:56,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:56,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042474607] [2023-12-21 14:16:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:56,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,561 INFO L87 Difference]: Start difference. First operand 1078 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:56,584 INFO L93 Difference]: Finished difference Result 3002 states and 4695 transitions. [2023-12-21 14:16:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:56,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-21 14:16:56,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:56,591 INFO L225 Difference]: With dead ends: 3002 [2023-12-21 14:16:56,591 INFO L226 Difference]: Without dead ends: 1976 [2023-12-21 14:16:56,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,596 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 95 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:56,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 388 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2023-12-21 14:16:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1974. [2023-12-21 14:16:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.5514445007602635) internal successors, (3061), 1973 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3061 transitions. [2023-12-21 14:16:56,625 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3061 transitions. Word has length 90 [2023-12-21 14:16:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:56,625 INFO L495 AbstractCegarLoop]: Abstraction has 1974 states and 3061 transitions. [2023-12-21 14:16:56,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3061 transitions. [2023-12-21 14:16:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:16:56,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:56,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:56,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:16:56,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:56,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:56,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1995360903, now seen corresponding path program 1 times [2023-12-21 14:16:56,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:56,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160881145] [2023-12-21 14:16:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:56,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:56,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:56,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160881145] [2023-12-21 14:16:56,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160881145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:56,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:56,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:56,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821701092] [2023-12-21 14:16:56,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:56,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:56,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:56,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:56,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,730 INFO L87 Difference]: Start difference. First operand 1974 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:56,757 INFO L93 Difference]: Finished difference Result 5562 states and 8663 transitions. [2023-12-21 14:16:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:56,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:16:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:56,768 INFO L225 Difference]: With dead ends: 5562 [2023-12-21 14:16:56,769 INFO L226 Difference]: Without dead ends: 3640 [2023-12-21 14:16:56,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:56,773 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 90 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:56,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 384 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2023-12-21 14:16:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2023-12-21 14:16:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.5455045367060765) internal successors, (5621), 3637 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5621 transitions. [2023-12-21 14:16:56,838 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5621 transitions. Word has length 91 [2023-12-21 14:16:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:56,839 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5621 transitions. [2023-12-21 14:16:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5621 transitions. [2023-12-21 14:16:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 14:16:56,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:56,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:16:56,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:56,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 338584792, now seen corresponding path program 1 times [2023-12-21 14:16:56,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:56,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897368042] [2023-12-21 14:16:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897368042] [2023-12-21 14:16:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897368042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:56,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:56,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372482435] [2023-12-21 14:16:56,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:56,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:56,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:56,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:56,996 INFO L87 Difference]: Start difference. First operand 3638 states and 5621 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:57,499 INFO L93 Difference]: Finished difference Result 53842 states and 83587 transitions. [2023-12-21 14:16:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:16:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 14:16:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:57,619 INFO L225 Difference]: With dead ends: 53842 [2023-12-21 14:16:57,619 INFO L226 Difference]: Without dead ends: 50256 [2023-12-21 14:16:57,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:16:57,644 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 2518 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:57,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2518 Valid, 5039 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50256 states. [2023-12-21 14:16:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50256 to 7222. [2023-12-21 14:16:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7222 states, 7221 states have (on average 1.5317823016202743) internal successors, (11061), 7221 states have internal predecessors, (11061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7222 states to 7222 states and 11061 transitions. [2023-12-21 14:16:58,155 INFO L78 Accepts]: Start accepts. Automaton has 7222 states and 11061 transitions. Word has length 92 [2023-12-21 14:16:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:58,156 INFO L495 AbstractCegarLoop]: Abstraction has 7222 states and 11061 transitions. [2023-12-21 14:16:58,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7222 states and 11061 transitions. [2023-12-21 14:16:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 14:16:58,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:58,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:58,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:16:58,157 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1959347564, now seen corresponding path program 1 times [2023-12-21 14:16:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800109722] [2023-12-21 14:16:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:58,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:58,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800109722] [2023-12-21 14:16:58,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800109722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:58,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:58,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039264274] [2023-12-21 14:16:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:58,305 INFO L87 Difference]: Start difference. First operand 7222 states and 11061 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:58,358 INFO L93 Difference]: Finished difference Result 20858 states and 31863 transitions. [2023-12-21 14:16:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:58,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 14:16:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:58,381 INFO L225 Difference]: With dead ends: 20858 [2023-12-21 14:16:58,382 INFO L226 Difference]: Without dead ends: 13688 [2023-12-21 14:16:58,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:58,393 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 80 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 302 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 [2023-12-21 14:16:58,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 302 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13688 states. [2023-12-21 14:16:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13688 to 13558. [2023-12-21 14:16:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13558 states, 13557 states have (on average 1.505126502913624) internal successors, (20405), 13557 states have internal predecessors, (20405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13558 states to 13558 states and 20405 transitions. [2023-12-21 14:16:58,645 INFO L78 Accepts]: Start accepts. Automaton has 13558 states and 20405 transitions. Word has length 94 [2023-12-21 14:16:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:58,645 INFO L495 AbstractCegarLoop]: Abstraction has 13558 states and 20405 transitions. [2023-12-21 14:16:58,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:58,646 INFO L276 IsEmpty]: Start isEmpty. Operand 13558 states and 20405 transitions. [2023-12-21 14:16:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 14:16:58,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:58,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:16:58,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:58,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1938344909, now seen corresponding path program 1 times [2023-12-21 14:16:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:58,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401183975] [2023-12-21 14:16:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:58,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:58,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:58,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401183975] [2023-12-21 14:16:58,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401183975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:58,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:58,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497921501] [2023-12-21 14:16:58,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:58,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:58,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:58,977 INFO L87 Difference]: Start difference. First operand 13558 states and 20405 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:59,289 INFO L93 Difference]: Finished difference Result 27066 states and 40759 transitions. [2023-12-21 14:16:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 14:16:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:59,311 INFO L225 Difference]: With dead ends: 27066 [2023-12-21 14:16:59,311 INFO L226 Difference]: Without dead ends: 13560 [2023-12-21 14:16:59,325 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 [2023-12-21 14:16:59,325 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 470 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:59,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 987 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13560 states. [2023-12-21 14:16:59,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13560 to 13558. [2023-12-21 14:16:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13558 states, 13557 states have (on average 1.4956848860367338) internal successors, (20277), 13557 states have internal predecessors, (20277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13558 states to 13558 states and 20277 transitions. [2023-12-21 14:16:59,513 INFO L78 Accepts]: Start accepts. Automaton has 13558 states and 20277 transitions. Word has length 94 [2023-12-21 14:16:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:59,514 INFO L495 AbstractCegarLoop]: Abstraction has 13558 states and 20277 transitions. [2023-12-21 14:16:59,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 13558 states and 20277 transitions. [2023-12-21 14:16:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:59,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:59,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:16:59,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:59,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1796384236, now seen corresponding path program 1 times [2023-12-21 14:16:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889796753] [2023-12-21 14:16:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:59,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:59,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:59,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889796753] [2023-12-21 14:16:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889796753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:59,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:59,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68832058] [2023-12-21 14:16:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:59,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:59,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:59,570 INFO L87 Difference]: Start difference. First operand 13558 states and 20277 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:59,642 INFO L93 Difference]: Finished difference Result 26621 states and 40123 transitions. [2023-12-21 14:16:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:59,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:16:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:59,670 INFO L225 Difference]: With dead ends: 26621 [2023-12-21 14:16:59,670 INFO L226 Difference]: Without dead ends: 19450 [2023-12-21 14:16:59,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:59,682 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 117 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:59,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2023-12-21 14:16:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19448. [2023-12-21 14:16:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19448 states, 19447 states have (on average 1.4936494060780583) internal successors, (29047), 19447 states have internal predecessors, (29047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19448 states to 19448 states and 29047 transitions. [2023-12-21 14:16:59,961 INFO L78 Accepts]: Start accepts. Automaton has 19448 states and 29047 transitions. Word has length 95 [2023-12-21 14:16:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:59,961 INFO L495 AbstractCegarLoop]: Abstraction has 19448 states and 29047 transitions. [2023-12-21 14:16:59,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 19448 states and 29047 transitions. [2023-12-21 14:16:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:59,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:59,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:59,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:16:59,962 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:59,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:59,962 INFO L85 PathProgramCache]: Analyzing trace with hash 38940696, now seen corresponding path program 1 times [2023-12-21 14:16:59,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:59,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474033229] [2023-12-21 14:16:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:59,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:00,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:00,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474033229] [2023-12-21 14:17:00,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474033229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:00,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:00,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:17:00,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444129896] [2023-12-21 14:17:00,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:00,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:17:00,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:00,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:17:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:17:00,049 INFO L87 Difference]: Start difference. First operand 19448 states and 29047 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:00,192 INFO L93 Difference]: Finished difference Result 38842 states and 58040 transitions. [2023-12-21 14:17:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:17:00,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:17:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:00,317 INFO L225 Difference]: With dead ends: 38842 [2023-12-21 14:17:00,318 INFO L226 Difference]: Without dead ends: 19448 [2023-12-21 14:17:00,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:17:00,331 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 417 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:00,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 156 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2023-12-21 14:17:00,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 19448. [2023-12-21 14:17:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19448 states, 19447 states have (on average 1.4837764179564972) internal successors, (28855), 19447 states have internal predecessors, (28855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19448 states to 19448 states and 28855 transitions. [2023-12-21 14:17:00,538 INFO L78 Accepts]: Start accepts. Automaton has 19448 states and 28855 transitions. Word has length 95 [2023-12-21 14:17:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:00,539 INFO L495 AbstractCegarLoop]: Abstraction has 19448 states and 28855 transitions. [2023-12-21 14:17:00,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 19448 states and 28855 transitions. [2023-12-21 14:17:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:17:00,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:00,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:00,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:17:00,540 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:00,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash 904473085, now seen corresponding path program 1 times [2023-12-21 14:17:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627489726] [2023-12-21 14:17:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:00,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:00,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627489726] [2023-12-21 14:17:00,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627489726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:00,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:00,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:17:00,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946635450] [2023-12-21 14:17:00,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:00,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:17:00,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:17:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:17:00,726 INFO L87 Difference]: Start difference. First operand 19448 states and 28855 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:00,869 INFO L93 Difference]: Finished difference Result 38842 states and 57656 transitions. [2023-12-21 14:17:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:17:00,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:17:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:00,901 INFO L225 Difference]: With dead ends: 38842 [2023-12-21 14:17:00,901 INFO L226 Difference]: Without dead ends: 19448 [2023-12-21 14:17:00,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:17:00,920 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 479 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:00,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 116 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:00,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2023-12-21 14:17:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 19448. [2023-12-21 14:17:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19448 states, 19447 states have (on average 1.4706124337944155) internal successors, (28599), 19447 states have internal predecessors, (28599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19448 states to 19448 states and 28599 transitions. [2023-12-21 14:17:01,213 INFO L78 Accepts]: Start accepts. Automaton has 19448 states and 28599 transitions. Word has length 95 [2023-12-21 14:17:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:01,213 INFO L495 AbstractCegarLoop]: Abstraction has 19448 states and 28599 transitions. [2023-12-21 14:17:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 19448 states and 28599 transitions. [2023-12-21 14:17:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:17:01,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:01,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:01,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:17:01,214 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:01,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash 542354360, now seen corresponding path program 1 times [2023-12-21 14:17:01,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:01,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635119359] [2023-12-21 14:17:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:01,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:01,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635119359] [2023-12-21 14:17:01,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635119359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:01,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:01,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:17:01,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390668422] [2023-12-21 14:17:01,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:01,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:17:01,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:17:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:17:01,303 INFO L87 Difference]: Start difference. First operand 19448 states and 28599 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:01,435 INFO L93 Difference]: Finished difference Result 38842 states and 57144 transitions. [2023-12-21 14:17:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:17:01,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:17:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:01,461 INFO L225 Difference]: With dead ends: 38842 [2023-12-21 14:17:01,461 INFO L226 Difference]: Without dead ends: 19448 [2023-12-21 14:17:01,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:17:01,478 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 398 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:01,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 164 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2023-12-21 14:17:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 19448. [2023-12-21 14:17:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19448 states, 19447 states have (on average 1.4607394456728544) internal successors, (28407), 19447 states have internal predecessors, (28407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19448 states to 19448 states and 28407 transitions. [2023-12-21 14:17:01,783 INFO L78 Accepts]: Start accepts. Automaton has 19448 states and 28407 transitions. Word has length 95 [2023-12-21 14:17:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:01,783 INFO L495 AbstractCegarLoop]: Abstraction has 19448 states and 28407 transitions. [2023-12-21 14:17:01,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 19448 states and 28407 transitions. [2023-12-21 14:17:01,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:17:01,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:01,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:01,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:17:01,784 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:01,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 13063859, now seen corresponding path program 1 times [2023-12-21 14:17:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252290174] [2023-12-21 14:17:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:01,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:01,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:01,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252290174] [2023-12-21 14:17:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252290174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:01,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:01,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:17:01,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982885617] [2023-12-21 14:17:01,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:01,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:17:01,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:17:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:17:01,853 INFO L87 Difference]: Start difference. First operand 19448 states and 28407 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:01,964 INFO L93 Difference]: Finished difference Result 38842 states and 56760 transitions. [2023-12-21 14:17:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:17:01,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:17:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:01,986 INFO L225 Difference]: With dead ends: 38842 [2023-12-21 14:17:01,986 INFO L226 Difference]: Without dead ends: 19448 [2023-12-21 14:17:02,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:17:02,001 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 434 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:02,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 140 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:17:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2023-12-21 14:17:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 19448. [2023-12-21 14:17:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19448 states, 19447 states have (on average 1.4508664575512933) internal successors, (28215), 19447 states have internal predecessors, (28215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19448 states to 19448 states and 28215 transitions. [2023-12-21 14:17:02,272 INFO L78 Accepts]: Start accepts. Automaton has 19448 states and 28215 transitions. Word has length 95 [2023-12-21 14:17:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:02,272 INFO L495 AbstractCegarLoop]: Abstraction has 19448 states and 28215 transitions. [2023-12-21 14:17:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:02,272 INFO L276 IsEmpty]: Start isEmpty. Operand 19448 states and 28215 transitions. [2023-12-21 14:17:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:17:02,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:02,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:02,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:17:02,273 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -749799848, now seen corresponding path program 1 times [2023-12-21 14:17:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838943153] [2023-12-21 14:17:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:02,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:02,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838943153] [2023-12-21 14:17:02,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838943153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:02,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:02,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:17:02,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952542431] [2023-12-21 14:17:02,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:02,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:17:02,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:02,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:17:02,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:17:02,338 INFO L87 Difference]: Start difference. First operand 19448 states and 28215 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:02,449 INFO L93 Difference]: Finished difference Result 38842 states and 56376 transitions. [2023-12-21 14:17:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:17:02,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:17:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:02,470 INFO L225 Difference]: With dead ends: 38842 [2023-12-21 14:17:02,470 INFO L226 Difference]: Without dead ends: 19448 [2023-12-21 14:17:02,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:17:02,483 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 457 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:02,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 124 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:17:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2023-12-21 14:17:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 19448. [2023-12-21 14:17:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19448 states, 19447 states have (on average 1.4409934694297322) internal successors, (28023), 19447 states have internal predecessors, (28023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19448 states to 19448 states and 28023 transitions. [2023-12-21 14:17:02,762 INFO L78 Accepts]: Start accepts. Automaton has 19448 states and 28023 transitions. Word has length 95 [2023-12-21 14:17:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:02,762 INFO L495 AbstractCegarLoop]: Abstraction has 19448 states and 28023 transitions. [2023-12-21 14:17:02,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 19448 states and 28023 transitions. [2023-12-21 14:17:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:17:02,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:02,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:02,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:17:02,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:02,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1803750333, now seen corresponding path program 1 times [2023-12-21 14:17:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873390247] [2023-12-21 14:17:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:02,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:02,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873390247] [2023-12-21 14:17:02,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873390247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:02,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:02,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:17:02,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243331313] [2023-12-21 14:17:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:02,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:17:02,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:02,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:17:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:17:02,889 INFO L87 Difference]: Start difference. First operand 19448 states and 28023 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:02,975 INFO L93 Difference]: Finished difference Result 35116 states and 50530 transitions. [2023-12-21 14:17:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:17:02,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:17:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:03,016 INFO L225 Difference]: With dead ends: 35116 [2023-12-21 14:17:03,017 INFO L226 Difference]: Without dead ends: 35114 [2023-12-21 14:17:03,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:17:03,028 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 234 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:03,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 804 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:17:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35114 states. [2023-12-21 14:17:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35114 to 19960. [2023-12-21 14:17:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19960 states, 19959 states have (on average 1.4264742722581292) internal successors, (28471), 19959 states have internal predecessors, (28471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19960 states to 19960 states and 28471 transitions. [2023-12-21 14:17:03,427 INFO L78 Accepts]: Start accepts. Automaton has 19960 states and 28471 transitions. Word has length 95 [2023-12-21 14:17:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:03,427 INFO L495 AbstractCegarLoop]: Abstraction has 19960 states and 28471 transitions. [2023-12-21 14:17:03,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 19960 states and 28471 transitions. [2023-12-21 14:17:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:17:03,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:03,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:17:03,434 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:03,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1984394937, now seen corresponding path program 1 times [2023-12-21 14:17:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210264844] [2023-12-21 14:17:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 14:17:03,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:03,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210264844] [2023-12-21 14:17:03,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210264844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:03,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:03,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:17:03,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530277087] [2023-12-21 14:17:03,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:03,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:17:03,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:17:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:17:03,622 INFO L87 Difference]: Start difference. First operand 19960 states and 28471 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:04,146 INFO L93 Difference]: Finished difference Result 162952 states and 232511 transitions. [2023-12-21 14:17:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:17:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 130 [2023-12-21 14:17:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:04,331 INFO L225 Difference]: With dead ends: 162952 [2023-12-21 14:17:04,332 INFO L226 Difference]: Without dead ends: 143046 [2023-12-21 14:17:04,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:17:04,380 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2141 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:04,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2141 Valid, 1894 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143046 states. [2023-12-21 14:17:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143046 to 39864. [2023-12-21 14:17:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39864 states, 39863 states have (on average 1.4222461932117503) internal successors, (56695), 39863 states have internal predecessors, (56695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39864 states to 39864 states and 56695 transitions. [2023-12-21 14:17:05,465 INFO L78 Accepts]: Start accepts. Automaton has 39864 states and 56695 transitions. Word has length 130 [2023-12-21 14:17:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:05,466 INFO L495 AbstractCegarLoop]: Abstraction has 39864 states and 56695 transitions. [2023-12-21 14:17:05,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 39864 states and 56695 transitions. [2023-12-21 14:17:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:17:05,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:05,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:05,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:17:05,473 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:05,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:05,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1659771213, now seen corresponding path program 1 times [2023-12-21 14:17:05,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:05,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841800914] [2023-12-21 14:17:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:05,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 14:17:05,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:05,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841800914] [2023-12-21 14:17:05,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841800914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:05,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:05,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:17:05,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221465647] [2023-12-21 14:17:05,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:05,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:17:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:17:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:17:05,615 INFO L87 Difference]: Start difference. First operand 39864 states and 56695 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:06,207 INFO L93 Difference]: Finished difference Result 182856 states and 260735 transitions. [2023-12-21 14:17:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:17:06,208 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 130 [2023-12-21 14:17:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:06,438 INFO L225 Difference]: With dead ends: 182856 [2023-12-21 14:17:06,438 INFO L226 Difference]: Without dead ends: 162950 [2023-12-21 14:17:06,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:17:06,497 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 2260 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:06,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2260 Valid, 1706 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162950 states. [2023-12-21 14:17:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162950 to 69752. [2023-12-21 14:17:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69752 states, 69751 states have (on average 1.4174850539777208) internal successors, (98871), 69751 states have internal predecessors, (98871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69752 states to 69752 states and 98871 transitions. [2023-12-21 14:17:07,875 INFO L78 Accepts]: Start accepts. Automaton has 69752 states and 98871 transitions. Word has length 130 [2023-12-21 14:17:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:07,875 INFO L495 AbstractCegarLoop]: Abstraction has 69752 states and 98871 transitions. [2023-12-21 14:17:07,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 69752 states and 98871 transitions. [2023-12-21 14:17:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:17:07,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:07,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:07,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:17:07,884 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:07,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2040208283, now seen corresponding path program 1 times [2023-12-21 14:17:07,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:07,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069671796] [2023-12-21 14:17:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:07,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 14:17:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069671796] [2023-12-21 14:17:08,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069671796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:08,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:17:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158830188] [2023-12-21 14:17:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:17:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:08,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:17:08,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:17:08,018 INFO L87 Difference]: Start difference. First operand 69752 states and 98871 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:08,998 INFO L93 Difference]: Finished difference Result 202760 states and 288959 transitions. [2023-12-21 14:17:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:17:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 130 [2023-12-21 14:17:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:09,207 INFO L225 Difference]: With dead ends: 202760 [2023-12-21 14:17:09,208 INFO L226 Difference]: Without dead ends: 182854 [2023-12-21 14:17:09,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:17:09,231 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 2124 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:09,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2124 Valid, 1884 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182854 states. [2023-12-21 14:17:10,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182854 to 89656. [2023-12-21 14:17:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89656 states, 89655 states have (on average 1.4176008030784675) internal successors, (127095), 89655 states have internal predecessors, (127095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89656 states to 89656 states and 127095 transitions. [2023-12-21 14:17:10,681 INFO L78 Accepts]: Start accepts. Automaton has 89656 states and 127095 transitions. Word has length 130 [2023-12-21 14:17:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:10,681 INFO L495 AbstractCegarLoop]: Abstraction has 89656 states and 127095 transitions. [2023-12-21 14:17:10,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 89656 states and 127095 transitions. [2023-12-21 14:17:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:17:10,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:10,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:10,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:17:10,689 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:10,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash -886262177, now seen corresponding path program 1 times [2023-12-21 14:17:10,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:10,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664813836] [2023-12-21 14:17:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:10,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 14:17:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664813836] [2023-12-21 14:17:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664813836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:10,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:10,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:17:10,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592334917] [2023-12-21 14:17:10,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:10,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:17:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:17:10,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:17:10,826 INFO L87 Difference]: Start difference. First operand 89656 states and 127095 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:11,644 INFO L93 Difference]: Finished difference Result 222664 states and 317183 transitions. [2023-12-21 14:17:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:17:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2023-12-21 14:17:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:12,138 INFO L225 Difference]: With dead ends: 222664 [2023-12-21 14:17:12,139 INFO L226 Difference]: Without dead ends: 202758 [2023-12-21 14:17:12,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:17:12,164 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1861 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:12,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 1972 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202758 states. [2023-12-21 14:17:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202758 to 109560. [2023-12-21 14:17:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109560 states, 109559 states have (on average 1.4176744950209477) internal successors, (155319), 109559 states have internal predecessors, (155319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109560 states to 109560 states and 155319 transitions. [2023-12-21 14:17:13,791 INFO L78 Accepts]: Start accepts. Automaton has 109560 states and 155319 transitions. Word has length 130 [2023-12-21 14:17:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:13,792 INFO L495 AbstractCegarLoop]: Abstraction has 109560 states and 155319 transitions. [2023-12-21 14:17:13,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 109560 states and 155319 transitions. [2023-12-21 14:17:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:17:13,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:13,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:13,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:17:13,801 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:13,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1744162855, now seen corresponding path program 1 times [2023-12-21 14:17:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:13,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456305151] [2023-12-21 14:17:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:13,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 14:17:13,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456305151] [2023-12-21 14:17:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456305151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:13,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:13,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:17:13,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935695158] [2023-12-21 14:17:13,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:13,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:17:13,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:17:13,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:17:13,945 INFO L87 Difference]: Start difference. First operand 109560 states and 155319 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:14,838 INFO L93 Difference]: Finished difference Result 242568 states and 345407 transitions. [2023-12-21 14:17:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:17:14,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 130 [2023-12-21 14:17:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:15,370 INFO L225 Difference]: With dead ends: 242568 [2023-12-21 14:17:15,370 INFO L226 Difference]: Without dead ends: 222662 [2023-12-21 14:17:15,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:17:15,389 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1792 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:15,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 2034 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222662 states. [2023-12-21 14:17:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222662 to 129464. [2023-12-21 14:17:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129464 states, 129463 states have (on average 1.4177255277569654) internal successors, (183543), 129463 states have internal predecessors, (183543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129464 states to 129464 states and 183543 transitions. [2023-12-21 14:17:17,699 INFO L78 Accepts]: Start accepts. Automaton has 129464 states and 183543 transitions. Word has length 130 [2023-12-21 14:17:17,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:17,699 INFO L495 AbstractCegarLoop]: Abstraction has 129464 states and 183543 transitions. [2023-12-21 14:17:17,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:17,700 INFO L276 IsEmpty]: Start isEmpty. Operand 129464 states and 183543 transitions. [2023-12-21 14:17:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:17:17,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:17,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:17,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:17:17,707 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:17,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash -315666221, now seen corresponding path program 1 times [2023-12-21 14:17:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579167443] [2023-12-21 14:17:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:17,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 14:17:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579167443] [2023-12-21 14:17:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579167443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:17,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:17:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818853575] [2023-12-21 14:17:17,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:17,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:17:17,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:17:17,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:17:17,854 INFO L87 Difference]: Start difference. First operand 129464 states and 183543 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:18,739 INFO L93 Difference]: Finished difference Result 262472 states and 373631 transitions. [2023-12-21 14:17:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:17:18,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 130 [2023-12-21 14:17:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:19,093 INFO L225 Difference]: With dead ends: 262472 [2023-12-21 14:17:19,094 INFO L226 Difference]: Without dead ends: 242566 [2023-12-21 14:17:19,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:17:19,160 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1874 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:19,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 2140 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:17:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242566 states. [2023-12-21 14:17:21,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242566 to 149368. [2023-12-21 14:17:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149368 states, 149367 states have (on average 1.4177629596898913) internal successors, (211767), 149367 states have internal predecessors, (211767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149368 states to 149368 states and 211767 transitions. [2023-12-21 14:17:21,711 INFO L78 Accepts]: Start accepts. Automaton has 149368 states and 211767 transitions. Word has length 130 [2023-12-21 14:17:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:21,712 INFO L495 AbstractCegarLoop]: Abstraction has 149368 states and 211767 transitions. [2023-12-21 14:17:21,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:21,712 INFO L276 IsEmpty]: Start isEmpty. Operand 149368 states and 211767 transitions. [2023-12-21 14:17:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 14:17:21,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:21,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:21,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:17:21,722 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:21,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1391691302, now seen corresponding path program 1 times [2023-12-21 14:17:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:21,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843858950] [2023-12-21 14:17:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:21,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:17:21,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:21,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843858950] [2023-12-21 14:17:21,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843858950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:17:21,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:17:21,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:17:21,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608284774] [2023-12-21 14:17:21,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:17:21,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:17:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:17:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:17:21,857 INFO L87 Difference]: Start difference. First operand 149368 states and 211767 transitions. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:22,767 INFO L93 Difference]: Finished difference Result 269704 states and 384191 transitions. [2023-12-21 14:17:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:17:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-21 14:17:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:23,373 INFO L225 Difference]: With dead ends: 269704 [2023-12-21 14:17:23,373 INFO L226 Difference]: Without dead ends: 256134 [2023-12-21 14:17:23,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:17:23,423 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 2135 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:23,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 2293 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:17:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256134 states. [2023-12-21 14:17:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256134 to 162936. [2023-12-21 14:17:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162936 states, 162935 states have (on average 1.4191119157946421) internal successors, (231223), 162935 states have internal predecessors, (231223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162936 states to 162936 states and 231223 transitions. [2023-12-21 14:17:25,958 INFO L78 Accepts]: Start accepts. Automaton has 162936 states and 231223 transitions. Word has length 131 [2023-12-21 14:17:25,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:25,959 INFO L495 AbstractCegarLoop]: Abstraction has 162936 states and 231223 transitions. [2023-12-21 14:17:25,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 162936 states and 231223 transitions. [2023-12-21 14:17:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 14:17:25,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:25,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:25,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:17:25,971 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:25,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1120162418, now seen corresponding path program 1 times [2023-12-21 14:17:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:25,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748996167] [2023-12-21 14:17:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:26,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:26,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748996167] [2023-12-21 14:17:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748996167] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:17:26,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402615969] [2023-12-21 14:17:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:26,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:17:26,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:17:26,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 14:17:26,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 14:17:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:26,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 14:17:26,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:17:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:17:26,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:17:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:17:27,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402615969] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:17:27,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:17:27,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-21 14:17:27,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638835059] [2023-12-21 14:17:27,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:17:27,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 14:17:27,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 14:17:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:17:27,039 INFO L87 Difference]: Start difference. First operand 162936 states and 231223 transitions. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:44,329 INFO L93 Difference]: Finished difference Result 2904988 states and 4083881 transitions. [2023-12-21 14:17:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-21 14:17:44,329 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 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 132 [2023-12-21 14:17:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:49,001 INFO L225 Difference]: With dead ends: 2904988 [2023-12-21 14:17:49,001 INFO L226 Difference]: Without dead ends: 2742106 [2023-12-21 14:17:49,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29318 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=8236, Invalid=53516, Unknown=0, NotChecked=0, Total=61752 [2023-12-21 14:17:49,857 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 13148 mSDsluCounter, 3612 mSDsCounter, 0 mSdLazyCounter, 4401 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13148 SdHoareTripleChecker+Valid, 4178 SdHoareTripleChecker+Invalid, 4491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 4401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:49,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13148 Valid, 4178 Invalid, 4491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 4401 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 14:17:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742106 states. [2023-12-21 14:18:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742106 to 1131896. [2023-12-21 14:18:13,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131896 states, 1131895 states have (on average 1.3977330052699235) internal successors, (1582087), 1131895 states have internal predecessors, (1582087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:18:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131896 states to 1131896 states and 1582087 transitions. [2023-12-21 14:18:18,568 INFO L78 Accepts]: Start accepts. Automaton has 1131896 states and 1582087 transitions. Word has length 132 [2023-12-21 14:18:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:18:18,569 INFO L495 AbstractCegarLoop]: Abstraction has 1131896 states and 1582087 transitions. [2023-12-21 14:18:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:18:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1131896 states and 1582087 transitions. [2023-12-21 14:18:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 14:18:18,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:18:18,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:18:18,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 14:18:18,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 14:18:18,799 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:18:18,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:18:18,800 INFO L85 PathProgramCache]: Analyzing trace with hash 673596479, now seen corresponding path program 1 times [2023-12-21 14:18:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:18:18,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925607595] [2023-12-21 14:18:18,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:18:18,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:18:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:18:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:18:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:18:18,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925607595] [2023-12-21 14:18:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925607595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:18:18,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:18:18,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:18:18,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745478247] [2023-12-21 14:18:18,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:18:18,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:18:18,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:18:18,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:18:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:18:18,976 INFO L87 Difference]: Start difference. First operand 1131896 states and 1582087 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)