/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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:20:33,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:20:33,929 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 14:20:33,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:20:33,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:20:33,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:20:33,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:20:33,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:20:33,962 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:20:33,966 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:20:33,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:20:33,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:20:33,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:20:33,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:20:33,968 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:20:33,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:20:33,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:20:33,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:20:33,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:20:33,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:20:33,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:20:33,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:20:33,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:20:33,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:20:33,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:20:33,970 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:20:33,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:20:33,970 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:20:33,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:20:33,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:20:33,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:20:33,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:20:33,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:20:33,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:20:33,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:20:33,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:20:33,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:20:34,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:20:34,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:20:34,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:20:34,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:20:34,175 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:20:34,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:20:35,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:20:35,517 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:20:35,519 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:20:35,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2327c2965/9e6df6e1666146b7b0b146c7e0e60b2a/FLAGa988c2a67 [2023-12-21 14:20:35,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2327c2965/9e6df6e1666146b7b0b146c7e0e60b2a [2023-12-21 14:20:35,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:20:35,548 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:20:35,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:20:35,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:20:35,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:20:35,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6050c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35, skipping insertion in model container [2023-12-21 14:20:35,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:20:35,729 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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2023-12-21 14:20:35,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:20:35,770 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:20:35,822 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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7752,7765] [2023-12-21 14:20:35,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:20:35,855 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:20:35,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35 WrapperNode [2023-12-21 14:20:35,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:20:35,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:20:35,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:20:35,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:20:35,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,913 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 658 [2023-12-21 14:20:35,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:20:35,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:20:35,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:20:35,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:20:35,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,933 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,945 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 14:20:35,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:20:35,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:20:35,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:20:35,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:20:35,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (1/1) ... [2023-12-21 14:20:35,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:20:36,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:20:36,025 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 14:20:36,049 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 14:20:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:20:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:20:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:20:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:20:36,166 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:20:36,167 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:20:36,575 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:20:36,600 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:20:36,601 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:20:36,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:20:36 BoogieIcfgContainer [2023-12-21 14:20:36,601 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:20:36,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:20:36,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:20:36,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:20:36,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:20:35" (1/3) ... [2023-12-21 14:20:36,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:20:36, skipping insertion in model container [2023-12-21 14:20:36,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:20:35" (2/3) ... [2023-12-21 14:20:36,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:20:36, skipping insertion in model container [2023-12-21 14:20:36,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:20:36" (3/3) ... [2023-12-21 14:20:36,606 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:20:36,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:20:36,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:20:36,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:20:36,661 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;@3a4040b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:20:36,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:20:36,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 146 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 14:20:36,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:36,671 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] [2023-12-21 14:20:36,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:36,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash -614875749, now seen corresponding path program 1 times [2023-12-21 14:20:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981700026] [2023-12-21 14:20:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:37,013 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 14:20:37,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:37,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981700026] [2023-12-21 14:20:37,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981700026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:37,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:37,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108069508] [2023-12-21 14:20:37,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:37,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:37,040 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 146 states have internal predecessors, (253), 0 states have call successors, (0), 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 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:37,135 INFO L93 Difference]: Finished difference Result 331 states and 555 transitions. [2023-12-21 14:20:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:37,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-21 14:20:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:37,148 INFO L225 Difference]: With dead ends: 331 [2023-12-21 14:20:37,148 INFO L226 Difference]: Without dead ends: 230 [2023-12-21 14:20:37,150 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 14:20:37,155 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 150 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:37,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 440 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-21 14:20:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2023-12-21 14:20:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.584070796460177) internal successors, (358), 226 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 358 transitions. [2023-12-21 14:20:37,197 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 358 transitions. Word has length 55 [2023-12-21 14:20:37,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:37,197 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 358 transitions. [2023-12-21 14:20:37,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 358 transitions. [2023-12-21 14:20:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 14:20:37,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:37,199 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] [2023-12-21 14:20:37,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:20:37,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:37,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash -434985188, now seen corresponding path program 1 times [2023-12-21 14:20:37,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:37,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72035131] [2023-12-21 14:20:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:37,284 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 14:20:37,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:37,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72035131] [2023-12-21 14:20:37,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72035131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:37,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:37,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:37,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76300356] [2023-12-21 14:20:37,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:37,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:37,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:37,287 INFO L87 Difference]: Start difference. First operand 227 states and 358 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:37,311 INFO L93 Difference]: Finished difference Result 565 states and 910 transitions. [2023-12-21 14:20:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:37,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-21 14:20:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:37,313 INFO L225 Difference]: With dead ends: 565 [2023-12-21 14:20:37,313 INFO L226 Difference]: Without dead ends: 388 [2023-12-21 14:20:37,314 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 14:20:37,315 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:37,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 422 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-21 14:20:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2023-12-21 14:20:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.6005221932114881) internal successors, (613), 383 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 613 transitions. [2023-12-21 14:20:37,327 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 613 transitions. Word has length 57 [2023-12-21 14:20:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:37,327 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 613 transitions. [2023-12-21 14:20:37,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 613 transitions. [2023-12-21 14:20:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 14:20:37,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:37,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:37,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:20:37,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:37,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1459832611, now seen corresponding path program 1 times [2023-12-21 14:20:37,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:37,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365763007] [2023-12-21 14:20:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:37,412 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 14:20:37,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365763007] [2023-12-21 14:20:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365763007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220247066] [2023-12-21 14:20:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:37,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:37,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:37,418 INFO L87 Difference]: Start difference. First operand 384 states and 613 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:37,438 INFO L93 Difference]: Finished difference Result 1020 states and 1647 transitions. [2023-12-21 14:20:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:37,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-21 14:20:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:37,441 INFO L225 Difference]: With dead ends: 1020 [2023-12-21 14:20:37,441 INFO L226 Difference]: Without dead ends: 686 [2023-12-21 14:20:37,444 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 14:20:37,447 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:37,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 423 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:37,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-21 14:20:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 680. [2023-12-21 14:20:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.6038291605301915) internal successors, (1089), 679 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1089 transitions. [2023-12-21 14:20:37,475 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1089 transitions. Word has length 59 [2023-12-21 14:20:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:37,475 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1089 transitions. [2023-12-21 14:20:37,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,475 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1089 transitions. [2023-12-21 14:20:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 14:20:37,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:37,477 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] [2023-12-21 14:20:37,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:20:37,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:37,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1654713502, now seen corresponding path program 1 times [2023-12-21 14:20:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336150131] [2023-12-21 14:20:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:37,604 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 14:20:37,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336150131] [2023-12-21 14:20:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336150131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163971748] [2023-12-21 14:20:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:37,607 INFO L87 Difference]: Start difference. First operand 680 states and 1089 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:37,738 INFO L93 Difference]: Finished difference Result 2972 states and 4847 transitions. [2023-12-21 14:20:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:20:37,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-21 14:20:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:37,747 INFO L225 Difference]: With dead ends: 2972 [2023-12-21 14:20:37,747 INFO L226 Difference]: Without dead ends: 2342 [2023-12-21 14:20:37,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:20:37,756 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1026 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:37,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1570 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:20:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2023-12-21 14:20:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1232. [2023-12-21 14:20:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 1.611697806661251) internal successors, (1984), 1231 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1984 transitions. [2023-12-21 14:20:37,783 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1984 transitions. Word has length 61 [2023-12-21 14:20:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:37,785 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1984 transitions. [2023-12-21 14:20:37,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1984 transitions. [2023-12-21 14:20:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 14:20:37,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:37,788 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] [2023-12-21 14:20:37,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:20:37,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:37,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash -305993181, now seen corresponding path program 1 times [2023-12-21 14:20:37,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:37,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857966830] [2023-12-21 14:20:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:37,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:37,843 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 14:20:37,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:37,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857966830] [2023-12-21 14:20:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857966830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:37,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:37,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:37,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797088056] [2023-12-21 14:20:37,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:37,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:37,845 INFO L87 Difference]: Start difference. First operand 1232 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:37,896 INFO L93 Difference]: Finished difference Result 3612 states and 5880 transitions. [2023-12-21 14:20:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:37,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-21 14:20:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:37,903 INFO L225 Difference]: With dead ends: 3612 [2023-12-21 14:20:37,903 INFO L226 Difference]: Without dead ends: 2430 [2023-12-21 14:20:37,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:37,905 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 456 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:37,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 767 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2023-12-21 14:20:37,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1822. [2023-12-21 14:20:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 1.6172432729269632) internal successors, (2945), 1821 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2945 transitions. [2023-12-21 14:20:37,932 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2945 transitions. Word has length 62 [2023-12-21 14:20:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:37,934 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 2945 transitions. [2023-12-21 14:20:37,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2945 transitions. [2023-12-21 14:20:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 14:20:37,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:37,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:37,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:20:37,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:37,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash -953800187, now seen corresponding path program 1 times [2023-12-21 14:20:37,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:37,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268953153] [2023-12-21 14:20:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:37,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:38,002 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 14:20:38,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:38,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268953153] [2023-12-21 14:20:38,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268953153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:38,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:38,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:38,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005259590] [2023-12-21 14:20:38,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:38,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:38,004 INFO L87 Difference]: Start difference. First operand 1822 states and 2945 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:38,061 INFO L93 Difference]: Finished difference Result 5306 states and 8624 transitions. [2023-12-21 14:20:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:38,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 14:20:38,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:38,070 INFO L225 Difference]: With dead ends: 5306 [2023-12-21 14:20:38,070 INFO L226 Difference]: Without dead ends: 3534 [2023-12-21 14:20:38,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:38,075 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 456 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:38,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 709 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2023-12-21 14:20:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 2666. [2023-12-21 14:20:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2665 states have (on average 1.6153846153846154) internal successors, (4305), 2665 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 4305 transitions. [2023-12-21 14:20:38,152 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 4305 transitions. Word has length 63 [2023-12-21 14:20:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:38,152 INFO L495 AbstractCegarLoop]: Abstraction has 2666 states and 4305 transitions. [2023-12-21 14:20:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 4305 transitions. [2023-12-21 14:20:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 14:20:38,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:38,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:38,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:20:38,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:38,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash 443577130, now seen corresponding path program 1 times [2023-12-21 14:20:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:38,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545093297] [2023-12-21 14:20:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:38,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:38,227 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 14:20:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:38,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545093297] [2023-12-21 14:20:38,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545093297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:38,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:38,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978607938] [2023-12-21 14:20:38,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:38,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:38,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:38,230 INFO L87 Difference]: Start difference. First operand 2666 states and 4305 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:38,285 INFO L93 Difference]: Finished difference Result 7706 states and 12500 transitions. [2023-12-21 14:20:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:38,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 14:20:38,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:38,298 INFO L225 Difference]: With dead ends: 7706 [2023-12-21 14:20:38,298 INFO L226 Difference]: Without dead ends: 5090 [2023-12-21 14:20:38,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:38,303 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 454 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:38,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 752 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:38,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5090 states. [2023-12-21 14:20:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5090 to 3862. [2023-12-21 14:20:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 1.612794612794613) internal successors, (6227), 3861 states have internal predecessors, (6227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 6227 transitions. [2023-12-21 14:20:38,373 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 6227 transitions. Word has length 64 [2023-12-21 14:20:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:38,373 INFO L495 AbstractCegarLoop]: Abstraction has 3862 states and 6227 transitions. [2023-12-21 14:20:38,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 6227 transitions. [2023-12-21 14:20:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 14:20:38,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:38,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:38,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:20:38,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:38,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1563733583, now seen corresponding path program 1 times [2023-12-21 14:20:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:38,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744060391] [2023-12-21 14:20:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:38,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:38,414 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 14:20:38,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:38,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744060391] [2023-12-21 14:20:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744060391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:38,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:38,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920729755] [2023-12-21 14:20:38,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:38,417 INFO L87 Difference]: Start difference. First operand 3862 states and 6227 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:38,448 INFO L93 Difference]: Finished difference Result 8639 states and 14033 transitions. [2023-12-21 14:20:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 14:20:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:38,462 INFO L225 Difference]: With dead ends: 8639 [2023-12-21 14:20:38,462 INFO L226 Difference]: Without dead ends: 5874 [2023-12-21 14:20:38,466 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 14:20:38,467 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 138 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 522 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 14:20:38,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 522 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2023-12-21 14:20:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5872. [2023-12-21 14:20:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5871 states have (on average 1.6131834440470108) internal successors, (9471), 5871 states have internal predecessors, (9471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 9471 transitions. [2023-12-21 14:20:38,572 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 9471 transitions. Word has length 65 [2023-12-21 14:20:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:38,573 INFO L495 AbstractCegarLoop]: Abstraction has 5872 states and 9471 transitions. [2023-12-21 14:20:38,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 9471 transitions. [2023-12-21 14:20:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 14:20:38,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:38,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:38,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:20:38,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:38,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1782098475, now seen corresponding path program 1 times [2023-12-21 14:20:38,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:38,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852485750] [2023-12-21 14:20:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:38,616 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 14:20:38,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:38,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852485750] [2023-12-21 14:20:38,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852485750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:38,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:38,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:38,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81216570] [2023-12-21 14:20:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:38,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:38,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:38,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:38,618 INFO L87 Difference]: Start difference. First operand 5872 states and 9471 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:38,666 INFO L93 Difference]: Finished difference Result 12986 states and 20988 transitions. [2023-12-21 14:20:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:38,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 14:20:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:38,694 INFO L225 Difference]: With dead ends: 12986 [2023-12-21 14:20:38,695 INFO L226 Difference]: Without dead ends: 8816 [2023-12-21 14:20:38,703 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 14:20:38,705 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 126 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 467 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 14:20:38,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:38,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8816 states. [2023-12-21 14:20:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8816 to 8814. [2023-12-21 14:20:38,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8814 states, 8813 states have (on average 1.6056961307159878) internal successors, (14151), 8813 states have internal predecessors, (14151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 14151 transitions. [2023-12-21 14:20:38,844 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 14151 transitions. Word has length 65 [2023-12-21 14:20:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:38,844 INFO L495 AbstractCegarLoop]: Abstraction has 8814 states and 14151 transitions. [2023-12-21 14:20:38,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 14151 transitions. [2023-12-21 14:20:38,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 14:20:38,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:38,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:38,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:20:38,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:38,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash -524335107, now seen corresponding path program 1 times [2023-12-21 14:20:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:38,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826880458] [2023-12-21 14:20:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:38,889 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 14:20:38,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:38,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826880458] [2023-12-21 14:20:38,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826880458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:38,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:38,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004023420] [2023-12-21 14:20:38,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:38,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:38,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:38,891 INFO L87 Difference]: Start difference. First operand 8814 states and 14151 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:38,944 INFO L93 Difference]: Finished difference Result 19163 states and 30837 transitions. [2023-12-21 14:20:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 14:20:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:38,967 INFO L225 Difference]: With dead ends: 19163 [2023-12-21 14:20:38,967 INFO L226 Difference]: Without dead ends: 12899 [2023-12-21 14:20:38,977 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 14:20:38,978 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 132 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 507 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 14:20:38,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 507 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:38,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12899 states. [2023-12-21 14:20:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12899 to 12897. [2023-12-21 14:20:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12897 states, 12896 states have (on average 1.597239454094293) internal successors, (20598), 12896 states have internal predecessors, (20598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12897 states to 12897 states and 20598 transitions. [2023-12-21 14:20:39,172 INFO L78 Accepts]: Start accepts. Automaton has 12897 states and 20598 transitions. Word has length 65 [2023-12-21 14:20:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:39,172 INFO L495 AbstractCegarLoop]: Abstraction has 12897 states and 20598 transitions. [2023-12-21 14:20:39,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 12897 states and 20598 transitions. [2023-12-21 14:20:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 14:20:39,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:39,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:39,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:20:39,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:39,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash -441451749, now seen corresponding path program 1 times [2023-12-21 14:20:39,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:39,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553591108] [2023-12-21 14:20:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:39,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:39,306 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 14:20:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553591108] [2023-12-21 14:20:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553591108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:39,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:39,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:39,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993179524] [2023-12-21 14:20:39,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:39,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:39,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:39,307 INFO L87 Difference]: Start difference. First operand 12897 states and 20598 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:39,421 INFO L93 Difference]: Finished difference Result 25712 states and 41079 transitions. [2023-12-21 14:20:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-21 14:20:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:39,439 INFO L225 Difference]: With dead ends: 25712 [2023-12-21 14:20:39,440 INFO L226 Difference]: Without dead ends: 12899 [2023-12-21 14:20:39,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:20:39,453 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 385 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:39,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 615 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12899 states. [2023-12-21 14:20:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12899 to 12897. [2023-12-21 14:20:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12897 states, 12896 states have (on average 1.5875465260545907) internal successors, (20473), 12896 states have internal predecessors, (20473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12897 states to 12897 states and 20473 transitions. [2023-12-21 14:20:39,662 INFO L78 Accepts]: Start accepts. Automaton has 12897 states and 20473 transitions. Word has length 66 [2023-12-21 14:20:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:39,662 INFO L495 AbstractCegarLoop]: Abstraction has 12897 states and 20473 transitions. [2023-12-21 14:20:39,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12897 states and 20473 transitions. [2023-12-21 14:20:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 14:20:39,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:39,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:39,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:20:39,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:39,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2147221975, now seen corresponding path program 1 times [2023-12-21 14:20:39,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:39,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004340265] [2023-12-21 14:20:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:39,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:39,776 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 14:20:39,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004340265] [2023-12-21 14:20:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004340265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:39,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678685325] [2023-12-21 14:20:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:39,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:39,778 INFO L87 Difference]: Start difference. First operand 12897 states and 20473 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:39,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:39,966 INFO L93 Difference]: Finished difference Result 36932 states and 58773 transitions. [2023-12-21 14:20:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:39,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-21 14:20:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:40,011 INFO L225 Difference]: With dead ends: 36932 [2023-12-21 14:20:40,011 INFO L226 Difference]: Without dead ends: 24119 [2023-12-21 14:20:40,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:20:40,030 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 379 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:40,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 621 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24119 states. [2023-12-21 14:20:40,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24119 to 24117. [2023-12-21 14:20:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24117 states, 24116 states have (on average 1.5768784209653341) internal successors, (38028), 24116 states have internal predecessors, (38028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24117 states to 24117 states and 38028 transitions. [2023-12-21 14:20:40,354 INFO L78 Accepts]: Start accepts. Automaton has 24117 states and 38028 transitions. Word has length 69 [2023-12-21 14:20:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 24117 states and 38028 transitions. [2023-12-21 14:20:40,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 24117 states and 38028 transitions. [2023-12-21 14:20:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 14:20:40,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:40,355 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] [2023-12-21 14:20:40,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:20:40,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:40,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:40,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2137462488, now seen corresponding path program 1 times [2023-12-21 14:20:40,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:40,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580863048] [2023-12-21 14:20:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:40,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:40,526 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 14:20:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580863048] [2023-12-21 14:20:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580863048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218995438] [2023-12-21 14:20:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:40,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:40,528 INFO L87 Difference]: Start difference. First operand 24117 states and 38028 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:40,747 INFO L93 Difference]: Finished difference Result 46044 states and 72309 transitions. [2023-12-21 14:20:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:20:40,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-12-21 14:20:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:40,799 INFO L225 Difference]: With dead ends: 46044 [2023-12-21 14:20:40,799 INFO L226 Difference]: Without dead ends: 46042 [2023-12-21 14:20:40,808 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 14:20:40,808 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 286 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:40,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1065 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46042 states. [2023-12-21 14:20:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46042 to 24841. [2023-12-21 14:20:41,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24841 states, 24840 states have (on average 1.5597020933977457) internal successors, (38743), 24840 states have internal predecessors, (38743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24841 states to 24841 states and 38743 transitions. [2023-12-21 14:20:41,251 INFO L78 Accepts]: Start accepts. Automaton has 24841 states and 38743 transitions. Word has length 70 [2023-12-21 14:20:41,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:41,251 INFO L495 AbstractCegarLoop]: Abstraction has 24841 states and 38743 transitions. [2023-12-21 14:20:41,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 24841 states and 38743 transitions. [2023-12-21 14:20:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 14:20:41,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:41,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:41,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:20:41,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:41,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:41,253 INFO L85 PathProgramCache]: Analyzing trace with hash -107609767, now seen corresponding path program 1 times [2023-12-21 14:20:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:41,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953968984] [2023-12-21 14:20:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:41,329 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 14:20:41,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953968984] [2023-12-21 14:20:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953968984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:41,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:41,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:41,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458947515] [2023-12-21 14:20:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:41,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:41,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:41,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:41,330 INFO L87 Difference]: Start difference. First operand 24841 states and 38743 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 14:20:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:41,618 INFO L93 Difference]: Finished difference Result 60729 states and 95065 transitions. [2023-12-21 14:20:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:41,618 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 96 [2023-12-21 14:20:41,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:41,705 INFO L225 Difference]: With dead ends: 60729 [2023-12-21 14:20:41,705 INFO L226 Difference]: Without dead ends: 48767 [2023-12-21 14:20:41,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:20:41,728 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 575 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:41,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1023 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48767 states. [2023-12-21 14:20:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48767 to 38121. [2023-12-21 14:20:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38121 states, 38120 states have (on average 1.5580010493179433) internal successors, (59391), 38120 states have internal predecessors, (59391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38121 states to 38121 states and 59391 transitions. [2023-12-21 14:20:42,314 INFO L78 Accepts]: Start accepts. Automaton has 38121 states and 59391 transitions. Word has length 96 [2023-12-21 14:20:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:42,314 INFO L495 AbstractCegarLoop]: Abstraction has 38121 states and 59391 transitions. [2023-12-21 14:20:42,315 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 14:20:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 38121 states and 59391 transitions. [2023-12-21 14:20:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 14:20:42,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:42,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:42,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:20:42,316 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:42,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash 110755125, now seen corresponding path program 1 times [2023-12-21 14:20:42,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:42,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295484280] [2023-12-21 14:20:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:42,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 14:20:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295484280] [2023-12-21 14:20:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295484280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760401912] [2023-12-21 14:20:42,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:42,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:42,517 INFO L87 Difference]: Start difference. First operand 38121 states and 59391 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:42,723 INFO L93 Difference]: Finished difference Result 68115 states and 106637 transitions. [2023-12-21 14:20:42,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:42,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 14:20:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:42,944 INFO L225 Difference]: With dead ends: 68115 [2023-12-21 14:20:42,945 INFO L226 Difference]: Without dead ends: 56383 [2023-12-21 14:20:42,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:20:42,960 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 584 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:42,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1088 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:20:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56383 states. [2023-12-21 14:20:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56383 to 51625. [2023-12-21 14:20:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51625 states, 51624 states have (on average 1.5596815434681544) internal successors, (80517), 51624 states have internal predecessors, (80517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51625 states to 51625 states and 80517 transitions. [2023-12-21 14:20:43,679 INFO L78 Accepts]: Start accepts. Automaton has 51625 states and 80517 transitions. Word has length 96 [2023-12-21 14:20:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:43,679 INFO L495 AbstractCegarLoop]: Abstraction has 51625 states and 80517 transitions. [2023-12-21 14:20:43,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 51625 states and 80517 transitions. [2023-12-21 14:20:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 14:20:43,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:43,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:43,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:20:43,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:43,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2099288839, now seen corresponding path program 1 times [2023-12-21 14:20:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664038637] [2023-12-21 14:20:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 14:20:43,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:43,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664038637] [2023-12-21 14:20:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664038637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:43,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:43,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:20:43,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532894669] [2023-12-21 14:20:43,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:43,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:20:43,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:43,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:20:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:20:43,771 INFO L87 Difference]: Start difference. First operand 51625 states and 80517 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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 14:20:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:44,151 INFO L93 Difference]: Finished difference Result 72775 states and 113937 transitions. [2023-12-21 14:20:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:20:44,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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 96 [2023-12-21 14:20:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:44,222 INFO L225 Difference]: With dead ends: 72775 [2023-12-21 14:20:44,223 INFO L226 Difference]: Without dead ends: 61043 [2023-12-21 14:20:44,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:20:44,245 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 583 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:44,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1061 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61043 states. [2023-12-21 14:20:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61043 to 59149. [2023-12-21 14:20:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59149 states, 59148 states have (on average 1.5613883816866165) internal successors, (92353), 59148 states have internal predecessors, (92353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59149 states to 59149 states and 92353 transitions. [2023-12-21 14:20:45,073 INFO L78 Accepts]: Start accepts. Automaton has 59149 states and 92353 transitions. Word has length 96 [2023-12-21 14:20:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:45,073 INFO L495 AbstractCegarLoop]: Abstraction has 59149 states and 92353 transitions. [2023-12-21 14:20:45,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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 14:20:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 59149 states and 92353 transitions. [2023-12-21 14:20:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 14:20:45,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:45,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:45,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:20:45,075 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:45,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:45,076 INFO L85 PathProgramCache]: Analyzing trace with hash 896560328, now seen corresponding path program 1 times [2023-12-21 14:20:45,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:45,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208099568] [2023-12-21 14:20:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:45,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:20:45,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208099568] [2023-12-21 14:20:45,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208099568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:45,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:45,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:20:45,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816742912] [2023-12-21 14:20:45,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:45,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:20:45,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:20:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:45,155 INFO L87 Difference]: Start difference. First operand 59149 states and 92353 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:45,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:45,646 INFO L93 Difference]: Finished difference Result 96272 states and 151012 transitions. [2023-12-21 14:20:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:20:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 14:20:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:45,770 INFO L225 Difference]: With dead ends: 96272 [2023-12-21 14:20:45,770 INFO L226 Difference]: Without dead ends: 76694 [2023-12-21 14:20:45,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:20:45,798 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 266 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:45,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 723 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76694 states. [2023-12-21 14:20:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76694 to 74802. [2023-12-21 14:20:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74802 states, 74801 states have (on average 1.5617037205384954) internal successors, (116817), 74801 states have internal predecessors, (116817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74802 states to 74802 states and 116817 transitions. [2023-12-21 14:20:46,768 INFO L78 Accepts]: Start accepts. Automaton has 74802 states and 116817 transitions. Word has length 97 [2023-12-21 14:20:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:46,768 INFO L495 AbstractCegarLoop]: Abstraction has 74802 states and 116817 transitions. [2023-12-21 14:20:46,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 74802 states and 116817 transitions. [2023-12-21 14:20:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 14:20:46,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:46,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:20:46,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:46,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash -880699480, now seen corresponding path program 1 times [2023-12-21 14:20:46,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:46,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623534359] [2023-12-21 14:20:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:20:46,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:46,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623534359] [2023-12-21 14:20:46,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623534359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:46,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742223427] [2023-12-21 14:20:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:46,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:46,818 INFO L87 Difference]: Start difference. First operand 74802 states and 116817 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:47,597 INFO L93 Difference]: Finished difference Result 161244 states and 252600 transitions. [2023-12-21 14:20:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:47,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-21 14:20:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:47,777 INFO L225 Difference]: With dead ends: 161244 [2023-12-21 14:20:47,777 INFO L226 Difference]: Without dead ends: 126182 [2023-12-21 14:20:47,827 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 14:20:47,828 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 117 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:47,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 414 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126182 states. [2023-12-21 14:20:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126182 to 125904. [2023-12-21 14:20:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125904 states, 125903 states have (on average 1.5618134595680802) internal successors, (196637), 125903 states have internal predecessors, (196637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125904 states to 125904 states and 196637 transitions. [2023-12-21 14:20:49,514 INFO L78 Accepts]: Start accepts. Automaton has 125904 states and 196637 transitions. Word has length 97 [2023-12-21 14:20:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:49,515 INFO L495 AbstractCegarLoop]: Abstraction has 125904 states and 196637 transitions. [2023-12-21 14:20:49,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 125904 states and 196637 transitions. [2023-12-21 14:20:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 14:20:49,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:49,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:20:49,517 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:49,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2067610405, now seen corresponding path program 1 times [2023-12-21 14:20:49,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:49,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354694931] [2023-12-21 14:20:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:49,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354694931] [2023-12-21 14:20:49,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354694931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:49,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919890348] [2023-12-21 14:20:49,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:49,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:49,572 INFO L87 Difference]: Start difference. First operand 125904 states and 196637 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:51,058 INFO L93 Difference]: Finished difference Result 370544 states and 578060 transitions. [2023-12-21 14:20:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 14:20:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:51,468 INFO L225 Difference]: With dead ends: 370544 [2023-12-21 14:20:51,468 INFO L226 Difference]: Without dead ends: 244724 [2023-12-21 14:20:51,525 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 14:20:51,526 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 172 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:51,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 541 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244724 states. [2023-12-21 14:20:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244724 to 244722. [2023-12-21 14:20:54,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244722 states, 244721 states have (on average 1.550059046832924) internal successors, (379332), 244721 states have internal predecessors, (379332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244722 states to 244722 states and 379332 transitions. [2023-12-21 14:20:55,022 INFO L78 Accepts]: Start accepts. Automaton has 244722 states and 379332 transitions. Word has length 98 [2023-12-21 14:20:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:20:55,022 INFO L495 AbstractCegarLoop]: Abstraction has 244722 states and 379332 transitions. [2023-12-21 14:20:55,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 244722 states and 379332 transitions. [2023-12-21 14:20:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 14:20:55,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:20:55,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:20:55,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:20:55,025 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:20:55,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:20:55,026 INFO L85 PathProgramCache]: Analyzing trace with hash -434455269, now seen corresponding path program 1 times [2023-12-21 14:20:55,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:20:55,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121376065] [2023-12-21 14:20:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:20:55,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:20:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:20:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:20:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:20:55,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121376065] [2023-12-21 14:20:55,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121376065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:20:55,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:20:55,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:20:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240384947] [2023-12-21 14:20:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:20:55,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:20:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:20:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:20:55,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:20:55,078 INFO L87 Difference]: Start difference. First operand 244722 states and 379332 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:20:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:20:57,531 INFO L93 Difference]: Finished difference Result 719856 states and 1114334 transitions. [2023-12-21 14:20:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:20:57,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 14:20:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:20:58,743 INFO L225 Difference]: With dead ends: 719856 [2023-12-21 14:20:58,743 INFO L226 Difference]: Without dead ends: 475262 [2023-12-21 14:20:58,862 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 14:20:58,863 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 153 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:20:58,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 504 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:20:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475262 states. [2023-12-21 14:21:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475262 to 475260. [2023-12-21 14:21:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475260 states, 475259 states have (on average 1.5375952901470566) internal successors, (730756), 475259 states have internal predecessors, (730756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:21:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475260 states to 475260 states and 730756 transitions. [2023-12-21 14:21:05,780 INFO L78 Accepts]: Start accepts. Automaton has 475260 states and 730756 transitions. Word has length 98 [2023-12-21 14:21:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:05,781 INFO L495 AbstractCegarLoop]: Abstraction has 475260 states and 730756 transitions. [2023-12-21 14:21:05,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:21:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 475260 states and 730756 transitions. [2023-12-21 14:21:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 14:21:05,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:05,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:21:05,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:21:05,786 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:05,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2085410469, now seen corresponding path program 1 times [2023-12-21 14:21:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:05,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096691126] [2023-12-21 14:21:05,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:05,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 14:21:05,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096691126] [2023-12-21 14:21:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096691126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:05,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293762635] [2023-12-21 14:21:05,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:05,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:05,829 INFO L87 Difference]: Start difference. First operand 475260 states and 730756 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 14:21:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:10,020 INFO L93 Difference]: Finished difference Result 1017054 states and 1568112 transitions. [2023-12-21 14:21:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:10,022 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 98 [2023-12-21 14:21:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:11,564 INFO L225 Difference]: With dead ends: 1017054 [2023-12-21 14:21:11,565 INFO L226 Difference]: Without dead ends: 751576 [2023-12-21 14:21:11,738 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 14:21:11,739 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 117 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:11,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 409 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751576 states. [2023-12-21 14:21:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751576 to 749970. [2023-12-21 14:21:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749970 states, 749969 states have (on average 1.5376662235372396) internal successors, (1153202), 749969 states have internal predecessors, (1153202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:21:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749970 states to 749970 states and 1153202 transitions. [2023-12-21 14:21:22,761 INFO L78 Accepts]: Start accepts. Automaton has 749970 states and 1153202 transitions. Word has length 98 [2023-12-21 14:21:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:22,761 INFO L495 AbstractCegarLoop]: Abstraction has 749970 states and 1153202 transitions. [2023-12-21 14:21:22,761 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 14:21:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 749970 states and 1153202 transitions. [2023-12-21 14:21:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 14:21:22,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:22,767 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:21:22,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:21:22,767 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:22,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1081336366, now seen corresponding path program 1 times [2023-12-21 14:21:22,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:22,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357029170] [2023-12-21 14:21:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:22,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 14:21:22,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357029170] [2023-12-21 14:21:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357029170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:22,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:22,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:21:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845086819] [2023-12-21 14:21:22,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:22,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:21:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:22,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:21:22,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:21:22,832 INFO L87 Difference]: Start difference. First operand 749970 states and 1153202 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 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 14:21:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:27,545 INFO L93 Difference]: Finished difference Result 1252420 states and 1931317 transitions. [2023-12-21 14:21:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:21:27,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 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 98 [2023-12-21 14:21:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:21:31,204 INFO L225 Difference]: With dead ends: 1252420 [2023-12-21 14:21:31,205 INFO L226 Difference]: Without dead ends: 977994 [2023-12-21 14:21:31,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:21:31,561 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 262 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:21:31,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 783 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:21:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977994 states. [2023-12-21 14:21:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977994 to 920522. [2023-12-21 14:21:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920522 states, 920521 states have (on average 1.535337053690247) internal successors, (1413310), 920521 states have internal predecessors, (1413310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:21:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920522 states to 920522 states and 1413310 transitions. [2023-12-21 14:21:47,303 INFO L78 Accepts]: Start accepts. Automaton has 920522 states and 1413310 transitions. Word has length 98 [2023-12-21 14:21:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:21:47,303 INFO L495 AbstractCegarLoop]: Abstraction has 920522 states and 1413310 transitions. [2023-12-21 14:21:47,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 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 14:21:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 920522 states and 1413310 transitions. [2023-12-21 14:21:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 14:21:47,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:21:47,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:21:47,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:21:47,309 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:21:47,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:21:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1936412815, now seen corresponding path program 1 times [2023-12-21 14:21:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:21:47,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335739768] [2023-12-21 14:21:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:21:47,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:21:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:21:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 14:21:47,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:21:47,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335739768] [2023-12-21 14:21:47,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335739768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:21:47,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:21:47,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:21:47,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293108880] [2023-12-21 14:21:47,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:21:47,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:21:47,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:21:47,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:21:47,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:21:47,372 INFO L87 Difference]: Start difference. First operand 920522 states and 1413310 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 14:21:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:21:57,624 INFO L93 Difference]: Finished difference Result 2279452 states and 3513654 transitions. [2023-12-21 14:21:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:21:57,624 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 99 [2023-12-21 14:21:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:22:03,159 INFO L225 Difference]: With dead ends: 2279452 [2023-12-21 14:22:03,160 INFO L226 Difference]: Without dead ends: 1359180 [2023-12-21 14:22:04,302 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 14:22:04,303 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 140 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:22:04,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 432 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:22:05,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359180 states. [2023-12-21 14:22:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359180 to 1305866. [2023-12-21 14:22:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305866 states, 1305865 states have (on average 1.5284780586048328) internal successors, (1995986), 1305865 states have internal predecessors, (1995986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)