/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:13:59,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:13:59,760 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 14:13:59,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:13:59,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:13:59,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:13:59,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:13:59,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:13:59,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:13:59,790 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:13:59,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:13:59,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:13:59,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:13:59,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:13:59,792 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:13:59,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:13:59,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:13:59,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:13:59,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:13:59,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:13:59,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:13:59,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:13:59,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:13:59,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:13:59,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:13:59,795 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:13:59,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:13:59,795 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:13:59,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:13:59,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:13:59,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:13:59,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:13:59,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:13:59,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:13:59,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:13:59,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:13:59,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:13:59,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:13:59,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:13:59,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:13:59,799 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:13:59,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:13:59,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:13:59,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:13:59,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:13:59,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:13:59,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:13:59,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:13:59,993 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:13:59,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2023-12-21 14:14:01,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:14:01,337 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:14:01,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2023-12-21 14:14:01,351 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7493e5534/36ce01526f2245ffb08a0d91a39d265b/FLAG33559b405 [2023-12-21 14:14:01,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7493e5534/36ce01526f2245ffb08a0d91a39d265b [2023-12-21 14:14:01,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:14:01,367 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:14:01,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:14:01,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:14:01,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:14:01,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1d5ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01, skipping insertion in model container [2023-12-21 14:14:01,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:14:01,627 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10527,10540] [2023-12-21 14:14:01,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:14:01,695 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:14:01,741 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10527,10540] [2023-12-21 14:14:01,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:14:01,777 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:14:01,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01 WrapperNode [2023-12-21 14:14:01,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:14:01,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:14:01,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:14:01,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:14:01,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,832 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 912 [2023-12-21 14:14:01,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:14:01,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:14:01,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:14:01,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:14:01,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,859 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 14:14:01,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:14:01,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:14:01,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:14:01,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:14:01,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (1/1) ... [2023-12-21 14:14:01,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:14:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:14:01,922 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 14:14:01,966 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 14:14:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:14:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:14:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:14:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:14:02,072 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:14:02,073 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:14:02,574 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:14:02,624 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:14:02,625 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:14:02,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:14:02 BoogieIcfgContainer [2023-12-21 14:14:02,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:14:02,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:14:02,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:14:02,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:14:02,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:14:01" (1/3) ... [2023-12-21 14:14:02,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f659cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:14:02, skipping insertion in model container [2023-12-21 14:14:02,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:14:01" (2/3) ... [2023-12-21 14:14:02,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f659cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:14:02, skipping insertion in model container [2023-12-21 14:14:02,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:14:02" (3/3) ... [2023-12-21 14:14:02,631 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2023-12-21 14:14:02,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:14:02,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:14:02,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:14:02,684 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;@60d87bb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:14:02,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:14:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 198 states have (on average 1.7727272727272727) internal successors, (351), 199 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 14:14:02,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:02,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:02,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:02,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2025366607, now seen corresponding path program 1 times [2023-12-21 14:14:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:02,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440914351] [2023-12-21 14:14:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:03,254 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 14:14:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:03,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440914351] [2023-12-21 14:14:03,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440914351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:03,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:03,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057540008] [2023-12-21 14:14:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:03,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:03,293 INFO L87 Difference]: Start difference. First operand has 200 states, 198 states have (on average 1.7727272727272727) internal successors, (351), 199 states have internal predecessors, (351), 0 states have call successors, (0), 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 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:03,963 INFO L93 Difference]: Finished difference Result 1443 states and 2326 transitions. [2023-12-21 14:14:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:14:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-21 14:14:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:03,989 INFO L225 Difference]: With dead ends: 1443 [2023-12-21 14:14:03,989 INFO L226 Difference]: Without dead ends: 1332 [2023-12-21 14:14:03,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:14:03,995 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 2668 mSDsluCounter, 6078 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2668 SdHoareTripleChecker+Valid, 6928 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:03,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2668 Valid, 6928 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2023-12-21 14:14:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 303. [2023-12-21 14:14:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4437086092715232) internal successors, (436), 302 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 436 transitions. [2023-12-21 14:14:04,040 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 436 transitions. Word has length 107 [2023-12-21 14:14:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:04,041 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 436 transitions. [2023-12-21 14:14:04,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 436 transitions. [2023-12-21 14:14:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:04,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:04,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:04,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:14:04,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:04,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:04,044 INFO L85 PathProgramCache]: Analyzing trace with hash -112612580, now seen corresponding path program 1 times [2023-12-21 14:14:04,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:04,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181720606] [2023-12-21 14:14:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:04,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:04,432 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 14:14:04,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181720606] [2023-12-21 14:14:04,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181720606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:04,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:04,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:04,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074680363] [2023-12-21 14:14:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:04,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:04,439 INFO L87 Difference]: Start difference. First operand 303 states and 436 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:04,701 INFO L93 Difference]: Finished difference Result 1559 states and 2418 transitions. [2023-12-21 14:14:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:04,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:04,707 INFO L225 Difference]: With dead ends: 1559 [2023-12-21 14:14:04,707 INFO L226 Difference]: Without dead ends: 1399 [2023-12-21 14:14:04,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:04,711 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 1945 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:04,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 4016 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2023-12-21 14:14:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 482. [2023-12-21 14:14:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.496881496881497) internal successors, (720), 481 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 720 transitions. [2023-12-21 14:14:04,757 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 720 transitions. Word has length 109 [2023-12-21 14:14:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:04,759 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 720 transitions. [2023-12-21 14:14:04,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 720 transitions. [2023-12-21 14:14:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:04,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:04,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:04,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:14:04,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:04,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash -481411432, now seen corresponding path program 1 times [2023-12-21 14:14:04,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:04,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174489401] [2023-12-21 14:14:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:04,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:04,982 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 14:14:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174489401] [2023-12-21 14:14:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174489401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:04,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:04,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738315499] [2023-12-21 14:14:04,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:04,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:04,988 INFO L87 Difference]: Start difference. First operand 482 states and 720 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:05,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:05,210 INFO L93 Difference]: Finished difference Result 1738 states and 2702 transitions. [2023-12-21 14:14:05,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:05,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:05,217 INFO L225 Difference]: With dead ends: 1738 [2023-12-21 14:14:05,217 INFO L226 Difference]: Without dead ends: 1578 [2023-12-21 14:14:05,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:05,221 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1940 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:05,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 3065 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-12-21 14:14:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 740. [2023-12-21 14:14:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.5277401894451963) internal successors, (1129), 739 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1129 transitions. [2023-12-21 14:14:05,239 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1129 transitions. Word has length 109 [2023-12-21 14:14:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:05,242 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1129 transitions. [2023-12-21 14:14:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1129 transitions. [2023-12-21 14:14:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:05,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:05,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:05,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:14:05,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:05,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash -483624912, now seen corresponding path program 1 times [2023-12-21 14:14:05,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:05,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420576412] [2023-12-21 14:14:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:05,531 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 14:14:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420576412] [2023-12-21 14:14:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420576412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:05,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412998845] [2023-12-21 14:14:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:05,534 INFO L87 Difference]: Start difference. First operand 740 states and 1129 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:05,810 INFO L93 Difference]: Finished difference Result 1912 states and 2978 transitions. [2023-12-21 14:14:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:05,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:05,817 INFO L225 Difference]: With dead ends: 1912 [2023-12-21 14:14:05,817 INFO L226 Difference]: Without dead ends: 1752 [2023-12-21 14:14:05,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:05,819 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 2144 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:05,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 2914 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2023-12-21 14:14:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 914. [2023-12-21 14:14:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 913 states have (on average 1.5388828039430449) internal successors, (1405), 913 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1405 transitions. [2023-12-21 14:14:05,841 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1405 transitions. Word has length 109 [2023-12-21 14:14:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:05,841 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1405 transitions. [2023-12-21 14:14:05,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1405 transitions. [2023-12-21 14:14:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:05,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:05,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:05,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:14:05,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:05,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1534440260, now seen corresponding path program 1 times [2023-12-21 14:14:05,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:05,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217048621] [2023-12-21 14:14:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:05,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:06,023 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 14:14:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217048621] [2023-12-21 14:14:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217048621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:06,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546611144] [2023-12-21 14:14:06,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:06,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:06,025 INFO L87 Difference]: Start difference. First operand 914 states and 1405 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:06,244 INFO L93 Difference]: Finished difference Result 2081 states and 3246 transitions. [2023-12-21 14:14:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:06,249 INFO L225 Difference]: With dead ends: 2081 [2023-12-21 14:14:06,249 INFO L226 Difference]: Without dead ends: 1921 [2023-12-21 14:14:06,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:06,251 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 2346 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:06,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 2683 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2023-12-21 14:14:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1078. [2023-12-21 14:14:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 1.5459610027855153) internal successors, (1665), 1077 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1665 transitions. [2023-12-21 14:14:06,279 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1665 transitions. Word has length 109 [2023-12-21 14:14:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:06,279 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1665 transitions. [2023-12-21 14:14:06,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1665 transitions. [2023-12-21 14:14:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:06,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:06,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:06,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:14:06,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:06,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash -713861008, now seen corresponding path program 1 times [2023-12-21 14:14:06,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:06,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939196049] [2023-12-21 14:14:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:06,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:06,460 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 14:14:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:06,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939196049] [2023-12-21 14:14:06,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939196049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:06,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:06,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380310921] [2023-12-21 14:14:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:06,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:06,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:06,462 INFO L87 Difference]: Start difference. First operand 1078 states and 1665 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:06,670 INFO L93 Difference]: Finished difference Result 2240 states and 3498 transitions. [2023-12-21 14:14:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:06,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:06,678 INFO L225 Difference]: With dead ends: 2240 [2023-12-21 14:14:06,679 INFO L226 Difference]: Without dead ends: 2080 [2023-12-21 14:14:06,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:06,682 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2847 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:06,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2847 Valid, 2590 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2023-12-21 14:14:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1237. [2023-12-21 14:14:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 1.5509708737864079) internal successors, (1917), 1236 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1917 transitions. [2023-12-21 14:14:06,731 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1917 transitions. Word has length 109 [2023-12-21 14:14:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:06,731 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1917 transitions. [2023-12-21 14:14:06,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1917 transitions. [2023-12-21 14:14:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:06,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:06,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:06,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:14:06,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:06,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1997775987, now seen corresponding path program 1 times [2023-12-21 14:14:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:06,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563314012] [2023-12-21 14:14:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:06,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:07,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:07,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563314012] [2023-12-21 14:14:07,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563314012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:07,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:07,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:07,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195063080] [2023-12-21 14:14:07,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:07,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:07,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:07,131 INFO L87 Difference]: Start difference. First operand 1237 states and 1917 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:07,394 INFO L93 Difference]: Finished difference Result 2268 states and 3551 transitions. [2023-12-21 14:14:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:07,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:07,398 INFO L225 Difference]: With dead ends: 2268 [2023-12-21 14:14:07,398 INFO L226 Difference]: Without dead ends: 1239 [2023-12-21 14:14:07,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-21 14:14:07,400 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 507 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:07,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1227 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-12-21 14:14:07,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2023-12-21 14:14:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 1.5453074433656957) internal successors, (1910), 1236 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1910 transitions. [2023-12-21 14:14:07,417 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1910 transitions. Word has length 109 [2023-12-21 14:14:07,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:07,417 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1910 transitions. [2023-12-21 14:14:07,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1910 transitions. [2023-12-21 14:14:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:07,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:07,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:14:07,418 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:07,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1754651636, now seen corresponding path program 1 times [2023-12-21 14:14:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:07,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590689307] [2023-12-21 14:14:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:07,466 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 14:14:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590689307] [2023-12-21 14:14:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590689307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:14:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238839351] [2023-12-21 14:14:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:07,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:14:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:14:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:14:07,468 INFO L87 Difference]: Start difference. First operand 1237 states and 1910 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:07,491 INFO L93 Difference]: Finished difference Result 3211 states and 5021 transitions. [2023-12-21 14:14:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:14:07,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:07,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:07,497 INFO L225 Difference]: With dead ends: 3211 [2023-12-21 14:14:07,497 INFO L226 Difference]: Without dead ends: 2182 [2023-12-21 14:14:07,500 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 14:14:07,501 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 115 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:07,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 638 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:14:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2023-12-21 14:14:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2180. [2023-12-21 14:14:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.5456631482331344) internal successors, (3368), 2179 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3368 transitions. [2023-12-21 14:14:07,530 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3368 transitions. Word has length 109 [2023-12-21 14:14:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:07,530 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3368 transitions. [2023-12-21 14:14:07,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3368 transitions. [2023-12-21 14:14:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:07,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:07,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:07,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:14:07,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1391979594, now seen corresponding path program 1 times [2023-12-21 14:14:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378305307] [2023-12-21 14:14:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:07,681 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 14:14:07,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378305307] [2023-12-21 14:14:07,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378305307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:07,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:07,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955526652] [2023-12-21 14:14:07,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:07,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:07,683 INFO L87 Difference]: Start difference. First operand 2180 states and 3368 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:07,912 INFO L93 Difference]: Finished difference Result 4356 states and 6768 transitions. [2023-12-21 14:14:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:07,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:07,922 INFO L225 Difference]: With dead ends: 4356 [2023-12-21 14:14:07,922 INFO L226 Difference]: Without dead ends: 4051 [2023-12-21 14:14:07,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:07,923 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2149 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:07,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 2973 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2023-12-21 14:14:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2483. [2023-12-21 14:14:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2482 states have (on average 1.547945205479452) internal successors, (3842), 2482 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3842 transitions. [2023-12-21 14:14:07,963 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3842 transitions. Word has length 109 [2023-12-21 14:14:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:07,963 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3842 transitions. [2023-12-21 14:14:07,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3842 transitions. [2023-12-21 14:14:07,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 14:14:07,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:07,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:07,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:14:07,965 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:07,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:07,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1793035644, now seen corresponding path program 1 times [2023-12-21 14:14:07,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:07,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584847202] [2023-12-21 14:14:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:07,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:08,112 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 14:14:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584847202] [2023-12-21 14:14:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584847202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:08,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:08,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:14:08,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619675420] [2023-12-21 14:14:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:08,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:08,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:08,114 INFO L87 Difference]: Start difference. First operand 2483 states and 3842 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:08,350 INFO L93 Difference]: Finished difference Result 4665 states and 7251 transitions. [2023-12-21 14:14:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:14:08,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 14:14:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:08,362 INFO L225 Difference]: With dead ends: 4665 [2023-12-21 14:14:08,362 INFO L226 Difference]: Without dead ends: 4360 [2023-12-21 14:14:08,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:08,364 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 2196 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:08,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 3694 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2023-12-21 14:14:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 2797. [2023-12-21 14:14:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 1.549713876967096) internal successors, (4333), 2796 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4333 transitions. [2023-12-21 14:14:08,412 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4333 transitions. Word has length 109 [2023-12-21 14:14:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:08,413 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4333 transitions. [2023-12-21 14:14:08,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4333 transitions. [2023-12-21 14:14:08,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 14:14:08,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:08,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:14:08,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:08,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1799604283, now seen corresponding path program 1 times [2023-12-21 14:14:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625127488] [2023-12-21 14:14:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:08,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:08,495 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 14:14:08,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:08,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625127488] [2023-12-21 14:14:08,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625127488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:08,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:08,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:08,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619459603] [2023-12-21 14:14:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:08,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:08,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:08,496 INFO L87 Difference]: Start difference. First operand 2797 states and 4333 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:08,699 INFO L93 Difference]: Finished difference Result 5522 states and 8589 transitions. [2023-12-21 14:14:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:14:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-21 14:14:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:08,706 INFO L225 Difference]: With dead ends: 5522 [2023-12-21 14:14:08,706 INFO L226 Difference]: Without dead ends: 2797 [2023-12-21 14:14:08,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:08,709 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 698 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:08,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 179 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2023-12-21 14:14:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2023-12-21 14:14:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 1.5371959942775393) internal successors, (4298), 2796 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4298 transitions. [2023-12-21 14:14:08,757 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4298 transitions. Word has length 110 [2023-12-21 14:14:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:08,757 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4298 transitions. [2023-12-21 14:14:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4298 transitions. [2023-12-21 14:14:08,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 14:14:08,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:08,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:08,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:14:08,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:08,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:08,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1013954983, now seen corresponding path program 1 times [2023-12-21 14:14:08,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:08,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105149983] [2023-12-21 14:14:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:08,860 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 14:14:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105149983] [2023-12-21 14:14:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105149983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:08,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:08,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043361943] [2023-12-21 14:14:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:08,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:08,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:08,862 INFO L87 Difference]: Start difference. First operand 2797 states and 4298 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:08,991 INFO L93 Difference]: Finished difference Result 5530 states and 8529 transitions. [2023-12-21 14:14:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:14:08,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-21 14:14:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:09,003 INFO L225 Difference]: With dead ends: 5530 [2023-12-21 14:14:09,003 INFO L226 Difference]: Without dead ends: 2797 [2023-12-21 14:14:09,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:09,007 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 714 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:09,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 163 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2023-12-21 14:14:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2023-12-21 14:14:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 1.5246781115879828) internal successors, (4263), 2796 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4263 transitions. [2023-12-21 14:14:09,044 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4263 transitions. Word has length 111 [2023-12-21 14:14:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:09,044 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4263 transitions. [2023-12-21 14:14:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4263 transitions. [2023-12-21 14:14:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 14:14:09,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:09,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:09,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:14:09,046 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:09,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:09,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1796475323, now seen corresponding path program 1 times [2023-12-21 14:14:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476029546] [2023-12-21 14:14:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:09,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476029546] [2023-12-21 14:14:09,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476029546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:09,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616386518] [2023-12-21 14:14:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:09,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:09,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:09,125 INFO L87 Difference]: Start difference. First operand 2797 states and 4263 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:09,252 INFO L93 Difference]: Finished difference Result 5526 states and 8455 transitions. [2023-12-21 14:14:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:14:09,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-21 14:14:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:09,256 INFO L225 Difference]: With dead ends: 5526 [2023-12-21 14:14:09,257 INFO L226 Difference]: Without dead ends: 2797 [2023-12-21 14:14:09,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:09,260 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 696 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:09,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 171 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2023-12-21 14:14:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2023-12-21 14:14:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 1.5121602288984264) internal successors, (4228), 2796 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4228 transitions. [2023-12-21 14:14:09,292 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4228 transitions. Word has length 112 [2023-12-21 14:14:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:09,292 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4228 transitions. [2023-12-21 14:14:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4228 transitions. [2023-12-21 14:14:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 14:14:09,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:09,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:09,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:14:09,294 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:09,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:09,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1286316851, now seen corresponding path program 1 times [2023-12-21 14:14:09,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:09,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118319855] [2023-12-21 14:14:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:09,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:09,459 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 14:14:09,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118319855] [2023-12-21 14:14:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118319855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:09,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:09,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849032588] [2023-12-21 14:14:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:09,461 INFO L87 Difference]: Start difference. First operand 2797 states and 4228 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:09,579 INFO L93 Difference]: Finished difference Result 5534 states and 8394 transitions. [2023-12-21 14:14:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:14:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 14:14:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:09,584 INFO L225 Difference]: With dead ends: 5534 [2023-12-21 14:14:09,584 INFO L226 Difference]: Without dead ends: 2797 [2023-12-21 14:14:09,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:09,587 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 713 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:09,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 155 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2023-12-21 14:14:09,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2023-12-21 14:14:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 1.4996423462088697) internal successors, (4193), 2796 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4193 transitions. [2023-12-21 14:14:09,639 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4193 transitions. Word has length 113 [2023-12-21 14:14:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:09,640 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4193 transitions. [2023-12-21 14:14:09,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4193 transitions. [2023-12-21 14:14:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 14:14:09,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:09,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:14:09,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1767059885, now seen corresponding path program 1 times [2023-12-21 14:14:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584587438] [2023-12-21 14:14:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584587438] [2023-12-21 14:14:09,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584587438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:09,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:09,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858445969] [2023-12-21 14:14:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:09,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:09,735 INFO L87 Difference]: Start difference. First operand 2797 states and 4193 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:09,931 INFO L93 Difference]: Finished difference Result 8213 states and 12376 transitions. [2023-12-21 14:14:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:14:09,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-12-21 14:14:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:09,939 INFO L225 Difference]: With dead ends: 8213 [2023-12-21 14:14:09,939 INFO L226 Difference]: Without dead ends: 5472 [2023-12-21 14:14:09,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:09,945 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1046 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:09,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 235 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:09,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2023-12-21 14:14:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 5470. [2023-12-21 14:14:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5470 states, 5469 states have (on average 1.5000914243920278) internal successors, (8204), 5469 states have internal predecessors, (8204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 8204 transitions. [2023-12-21 14:14:10,009 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 8204 transitions. Word has length 114 [2023-12-21 14:14:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:10,010 INFO L495 AbstractCegarLoop]: Abstraction has 5470 states and 8204 transitions. [2023-12-21 14:14:10,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 8204 transitions. [2023-12-21 14:14:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 14:14:10,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:10,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:14:10,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:10,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1293442625, now seen corresponding path program 1 times [2023-12-21 14:14:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:10,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953622218] [2023-12-21 14:14:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:10,098 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 14:14:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953622218] [2023-12-21 14:14:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953622218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:10,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511680578] [2023-12-21 14:14:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:10,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:10,101 INFO L87 Difference]: Start difference. First operand 5470 states and 8204 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:10,220 INFO L93 Difference]: Finished difference Result 10860 states and 16326 transitions. [2023-12-21 14:14:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:14:10,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2023-12-21 14:14:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:10,227 INFO L225 Difference]: With dead ends: 10860 [2023-12-21 14:14:10,227 INFO L226 Difference]: Without dead ends: 5470 [2023-12-21 14:14:10,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:10,233 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 645 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:10,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 199 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5470 states. [2023-12-21 14:14:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5470 to 5470. [2023-12-21 14:14:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5470 states, 5469 states have (on average 1.4874748582921924) internal successors, (8135), 5469 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 8135 transitions. [2023-12-21 14:14:10,335 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 8135 transitions. Word has length 115 [2023-12-21 14:14:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:10,335 INFO L495 AbstractCegarLoop]: Abstraction has 5470 states and 8135 transitions. [2023-12-21 14:14:10,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 8135 transitions. [2023-12-21 14:14:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 14:14:10,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:10,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:10,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:14:10,338 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:10,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:10,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1851898717, now seen corresponding path program 1 times [2023-12-21 14:14:10,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:10,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024311824] [2023-12-21 14:14:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:10,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:10,432 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 14:14:10,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:10,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024311824] [2023-12-21 14:14:10,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024311824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:10,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:10,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:10,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634055060] [2023-12-21 14:14:10,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:10,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:10,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:10,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:10,434 INFO L87 Difference]: Start difference. First operand 5470 states and 8135 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:10,562 INFO L93 Difference]: Finished difference Result 10864 states and 16193 transitions. [2023-12-21 14:14:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:14:10,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-21 14:14:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:10,570 INFO L225 Difference]: With dead ends: 10864 [2023-12-21 14:14:10,570 INFO L226 Difference]: Without dead ends: 5470 [2023-12-21 14:14:10,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:10,576 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 649 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:10,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 187 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5470 states. [2023-12-21 14:14:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5470 to 5470. [2023-12-21 14:14:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5470 states, 5469 states have (on average 1.474858292192357) internal successors, (8066), 5469 states have internal predecessors, (8066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 8066 transitions. [2023-12-21 14:14:10,639 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 8066 transitions. Word has length 116 [2023-12-21 14:14:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:10,640 INFO L495 AbstractCegarLoop]: Abstraction has 5470 states and 8066 transitions. [2023-12-21 14:14:10,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 8066 transitions. [2023-12-21 14:14:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 14:14:10,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:10,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:10,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:14:10,641 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:10,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1165758795, now seen corresponding path program 1 times [2023-12-21 14:14:10,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:10,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361750683] [2023-12-21 14:14:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:10,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:10,810 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 14:14:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361750683] [2023-12-21 14:14:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361750683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:10,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:10,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:14:10,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451743392] [2023-12-21 14:14:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:10,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:14:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:10,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:14:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:14:10,812 INFO L87 Difference]: Start difference. First operand 5470 states and 8066 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:10,888 INFO L93 Difference]: Finished difference Result 9140 states and 13481 transitions. [2023-12-21 14:14:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:14:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2023-12-21 14:14:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:10,899 INFO L225 Difference]: With dead ends: 9140 [2023-12-21 14:14:10,899 INFO L226 Difference]: Without dead ends: 9138 [2023-12-21 14:14:10,901 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 14:14:10,902 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 228 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:10,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1058 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:14:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9138 states. [2023-12-21 14:14:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9138 to 5502. [2023-12-21 14:14:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 1.468823850209053) internal successors, (8080), 5501 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 8080 transitions. [2023-12-21 14:14:10,993 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 8080 transitions. Word has length 117 [2023-12-21 14:14:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:10,993 INFO L495 AbstractCegarLoop]: Abstraction has 5502 states and 8080 transitions. [2023-12-21 14:14:10,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:10,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 8080 transitions. [2023-12-21 14:14:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 14:14:10,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:10,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:10,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:14:10,995 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:10,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1841524665, now seen corresponding path program 1 times [2023-12-21 14:14:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:10,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543065836] [2023-12-21 14:14:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:11,354 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 14:14:11,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:11,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543065836] [2023-12-21 14:14:11,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543065836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:11,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:14:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629088536] [2023-12-21 14:14:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:14:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:14:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:14:11,357 INFO L87 Difference]: Start difference. First operand 5502 states and 8080 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:11,729 INFO L93 Difference]: Finished difference Result 15971 states and 23501 transitions. [2023-12-21 14:14:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 14:14:11,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2023-12-21 14:14:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:11,746 INFO L225 Difference]: With dead ends: 15971 [2023-12-21 14:14:11,747 INFO L226 Difference]: Without dead ends: 10688 [2023-12-21 14:14:11,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-21 14:14:11,756 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1164 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:11,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 457 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10688 states. [2023-12-21 14:14:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10688 to 5502. [2023-12-21 14:14:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 1.4686420650790766) internal successors, (8079), 5501 states have internal predecessors, (8079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 8079 transitions. [2023-12-21 14:14:11,884 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 8079 transitions. Word has length 117 [2023-12-21 14:14:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:11,884 INFO L495 AbstractCegarLoop]: Abstraction has 5502 states and 8079 transitions. [2023-12-21 14:14:11,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 8079 transitions. [2023-12-21 14:14:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 14:14:11,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:11,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:11,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:14:11,886 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:11,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash -108061565, now seen corresponding path program 1 times [2023-12-21 14:14:11,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:11,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798391281] [2023-12-21 14:14:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:11,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:12,024 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 14:14:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798391281] [2023-12-21 14:14:12,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798391281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:12,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:12,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:14:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166486722] [2023-12-21 14:14:12,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:12,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:14:12,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:14:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:14:12,026 INFO L87 Difference]: Start difference. First operand 5502 states and 8079 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:12,063 INFO L93 Difference]: Finished difference Result 13043 states and 19188 transitions. [2023-12-21 14:14:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:14:12,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-21 14:14:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:12,075 INFO L225 Difference]: With dead ends: 13043 [2023-12-21 14:14:12,076 INFO L226 Difference]: Without dead ends: 7857 [2023-12-21 14:14:12,083 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 14:14:12,084 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 132 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:12,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 596 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:14:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2023-12-21 14:14:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7855. [2023-12-21 14:14:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7855 states, 7854 states have (on average 1.4646040234275528) internal successors, (11503), 7854 states have internal predecessors, (11503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7855 states to 7855 states and 11503 transitions. [2023-12-21 14:14:12,180 INFO L78 Accepts]: Start accepts. Automaton has 7855 states and 11503 transitions. Word has length 118 [2023-12-21 14:14:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:12,181 INFO L495 AbstractCegarLoop]: Abstraction has 7855 states and 11503 transitions. [2023-12-21 14:14:12,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7855 states and 11503 transitions. [2023-12-21 14:14:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 14:14:12,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:12,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:14:12,182 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:12,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:12,183 INFO L85 PathProgramCache]: Analyzing trace with hash -259416299, now seen corresponding path program 1 times [2023-12-21 14:14:12,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:12,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797437925] [2023-12-21 14:14:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:12,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:12,465 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 14:14:12,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:12,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797437925] [2023-12-21 14:14:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797437925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:12,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:12,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:12,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142873833] [2023-12-21 14:14:12,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:12,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:12,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:12,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:12,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:12,467 INFO L87 Difference]: Start difference. First operand 7855 states and 11503 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:13,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:13,117 INFO L93 Difference]: Finished difference Result 37048 states and 53860 transitions. [2023-12-21 14:14:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 14:14:13,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-21 14:14:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:13,171 INFO L225 Difference]: With dead ends: 37048 [2023-12-21 14:14:13,171 INFO L226 Difference]: Without dead ends: 29509 [2023-12-21 14:14:13,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2023-12-21 14:14:13,188 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 2363 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:13,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2363 Valid, 609 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29509 states. [2023-12-21 14:14:13,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29509 to 7900. [2023-12-21 14:14:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.46385618432713) internal successors, (11563), 7899 states have internal predecessors, (11563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 11563 transitions. [2023-12-21 14:14:13,469 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 11563 transitions. Word has length 118 [2023-12-21 14:14:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:13,469 INFO L495 AbstractCegarLoop]: Abstraction has 7900 states and 11563 transitions. [2023-12-21 14:14:13,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 11563 transitions. [2023-12-21 14:14:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 14:14:13,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:13,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:13,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:14:13,472 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:13,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1169984461, now seen corresponding path program 1 times [2023-12-21 14:14:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:13,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541605558] [2023-12-21 14:14:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:13,962 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 14:14:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541605558] [2023-12-21 14:14:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541605558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:13,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:14:13,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697307812] [2023-12-21 14:14:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:13,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:14:13,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:14:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:13,965 INFO L87 Difference]: Start difference. First operand 7900 states and 11563 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:14,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:14,899 INFO L93 Difference]: Finished difference Result 39579 states and 57559 transitions. [2023-12-21 14:14:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 14:14:14,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-21 14:14:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:14,944 INFO L225 Difference]: With dead ends: 39579 [2023-12-21 14:14:14,944 INFO L226 Difference]: Without dead ends: 31951 [2023-12-21 14:14:14,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2023-12-21 14:14:14,960 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1787 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:14,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1500 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 14:14:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31951 states. [2023-12-21 14:14:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31951 to 7972. [2023-12-21 14:14:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7972 states, 7971 states have (on average 1.4630535691883075) internal successors, (11662), 7971 states have internal predecessors, (11662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7972 states to 7972 states and 11662 transitions. [2023-12-21 14:14:15,178 INFO L78 Accepts]: Start accepts. Automaton has 7972 states and 11662 transitions. Word has length 118 [2023-12-21 14:14:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:15,178 INFO L495 AbstractCegarLoop]: Abstraction has 7972 states and 11662 transitions. [2023-12-21 14:14:15,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7972 states and 11662 transitions. [2023-12-21 14:14:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 14:14:15,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:15,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:15,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:14:15,179 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:15,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1200614413, now seen corresponding path program 1 times [2023-12-21 14:14:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317984394] [2023-12-21 14:14:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:15,383 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 14:14:15,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:15,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317984394] [2023-12-21 14:14:15,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317984394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:15,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:15,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631147021] [2023-12-21 14:14:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:15,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:15,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:15,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:15,386 INFO L87 Difference]: Start difference. First operand 7972 states and 11662 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:15,859 INFO L93 Difference]: Finished difference Result 23409 states and 34198 transitions. [2023-12-21 14:14:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:14:15,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-21 14:14:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:15,881 INFO L225 Difference]: With dead ends: 23409 [2023-12-21 14:14:15,881 INFO L226 Difference]: Without dead ends: 15818 [2023-12-21 14:14:15,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:14:15,893 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1604 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:15,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 524 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15818 states. [2023-12-21 14:14:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15818 to 7972. [2023-12-21 14:14:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7972 states, 7971 states have (on average 1.4614226571321038) internal successors, (11649), 7971 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7972 states to 7972 states and 11649 transitions. [2023-12-21 14:14:16,028 INFO L78 Accepts]: Start accepts. Automaton has 7972 states and 11649 transitions. Word has length 119 [2023-12-21 14:14:16,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:16,028 INFO L495 AbstractCegarLoop]: Abstraction has 7972 states and 11649 transitions. [2023-12-21 14:14:16,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7972 states and 11649 transitions. [2023-12-21 14:14:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 14:14:16,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:16,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:16,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:14:16,029 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:16,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:16,030 INFO L85 PathProgramCache]: Analyzing trace with hash 188934846, now seen corresponding path program 1 times [2023-12-21 14:14:16,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:16,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660217978] [2023-12-21 14:14:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:16,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:16,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660217978] [2023-12-21 14:14:16,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660217978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:16,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:16,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:16,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618307842] [2023-12-21 14:14:16,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:16,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:16,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:16,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:16,222 INFO L87 Difference]: Start difference. First operand 7972 states and 11649 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:16,669 INFO L93 Difference]: Finished difference Result 23527 states and 34341 transitions. [2023-12-21 14:14:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:14:16,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-21 14:14:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:16,688 INFO L225 Difference]: With dead ends: 23527 [2023-12-21 14:14:16,688 INFO L226 Difference]: Without dead ends: 15881 [2023-12-21 14:14:16,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:14:16,701 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1647 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:16,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 518 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15881 states. [2023-12-21 14:14:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15881 to 7900. [2023-12-21 14:14:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.4608178250411445) internal successors, (11539), 7899 states have internal predecessors, (11539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 11539 transitions. [2023-12-21 14:14:16,917 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 11539 transitions. Word has length 120 [2023-12-21 14:14:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:16,917 INFO L495 AbstractCegarLoop]: Abstraction has 7900 states and 11539 transitions. [2023-12-21 14:14:16,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 11539 transitions. [2023-12-21 14:14:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 14:14:16,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:16,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 14:14:16,919 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:16,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash -121519195, now seen corresponding path program 1 times [2023-12-21 14:14:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875797866] [2023-12-21 14:14:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:17,182 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 14:14:17,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:17,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875797866] [2023-12-21 14:14:17,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875797866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:17,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:17,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:17,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473178893] [2023-12-21 14:14:17,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:17,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:17,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:17,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:17,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:17,184 INFO L87 Difference]: Start difference. First operand 7900 states and 11539 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:17,786 INFO L93 Difference]: Finished difference Result 16573 states and 24172 transitions. [2023-12-21 14:14:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:14:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-21 14:14:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:17,798 INFO L225 Difference]: With dead ends: 16573 [2023-12-21 14:14:17,798 INFO L226 Difference]: Without dead ends: 8837 [2023-12-21 14:14:17,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:14:17,805 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 904 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:17,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 750 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:14:17,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8837 states. [2023-12-21 14:14:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8837 to 7900. [2023-12-21 14:14:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.4604380301303963) internal successors, (11536), 7899 states have internal predecessors, (11536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 11536 transitions. [2023-12-21 14:14:17,890 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 11536 transitions. Word has length 120 [2023-12-21 14:14:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:17,890 INFO L495 AbstractCegarLoop]: Abstraction has 7900 states and 11536 transitions. [2023-12-21 14:14:17,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 11536 transitions. [2023-12-21 14:14:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 14:14:17,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:17,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:17,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 14:14:17,893 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:17,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1422872338, now seen corresponding path program 1 times [2023-12-21 14:14:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:17,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260976002] [2023-12-21 14:14:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:17,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:18,317 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 14:14:18,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260976002] [2023-12-21 14:14:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260976002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 14:14:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401795260] [2023-12-21 14:14:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:18,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 14:14:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 14:14:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:14:18,319 INFO L87 Difference]: Start difference. First operand 7900 states and 11536 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:20,972 INFO L93 Difference]: Finished difference Result 115637 states and 168894 transitions. [2023-12-21 14:14:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 14:14:20,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-12-21 14:14:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:21,131 INFO L225 Difference]: With dead ends: 115637 [2023-12-21 14:14:21,131 INFO L226 Difference]: Without dead ends: 107916 [2023-12-21 14:14:21,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=1880, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 14:14:21,154 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 7103 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7103 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:21,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7103 Valid, 2035 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 14:14:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107916 states. [2023-12-21 14:14:21,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107916 to 7909. [2023-12-21 14:14:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 1.4595346484572584) internal successors, (11542), 7908 states have internal predecessors, (11542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 11542 transitions. [2023-12-21 14:14:21,962 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 11542 transitions. Word has length 121 [2023-12-21 14:14:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:21,963 INFO L495 AbstractCegarLoop]: Abstraction has 7909 states and 11542 transitions. [2023-12-21 14:14:21,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 11542 transitions. [2023-12-21 14:14:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 14:14:21,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:21,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:21,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 14:14:21,968 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:21,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1624868017, now seen corresponding path program 1 times [2023-12-21 14:14:21,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:21,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875351062] [2023-12-21 14:14:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:21,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:22,229 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 14:14:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875351062] [2023-12-21 14:14:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875351062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:22,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:22,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:22,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736130068] [2023-12-21 14:14:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:22,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:22,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:22,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:22,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:22,231 INFO L87 Difference]: Start difference. First operand 7909 states and 11542 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:22,761 INFO L93 Difference]: Finished difference Result 23521 states and 34318 transitions. [2023-12-21 14:14:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:14:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-21 14:14:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:22,780 INFO L225 Difference]: With dead ends: 23521 [2023-12-21 14:14:22,780 INFO L226 Difference]: Without dead ends: 15830 [2023-12-21 14:14:22,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:14:22,789 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1522 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:22,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 575 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:22,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15830 states. [2023-12-21 14:14:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15830 to 7909. [2023-12-21 14:14:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 1.4583965604451188) internal successors, (11533), 7908 states have internal predecessors, (11533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 11533 transitions. [2023-12-21 14:14:22,919 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 11533 transitions. Word has length 122 [2023-12-21 14:14:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:22,919 INFO L495 AbstractCegarLoop]: Abstraction has 7909 states and 11533 transitions. [2023-12-21 14:14:22,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 11533 transitions. [2023-12-21 14:14:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:22,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:22,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:22,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 14:14:22,921 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:22,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1590178660, now seen corresponding path program 1 times [2023-12-21 14:14:22,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:22,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489877408] [2023-12-21 14:14:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:23,492 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 14:14:23,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489877408] [2023-12-21 14:14:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489877408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:23,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:23,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:14:23,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613028147] [2023-12-21 14:14:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:23,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:14:23,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:14:23,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:23,493 INFO L87 Difference]: Start difference. First operand 7909 states and 11533 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:24,356 INFO L93 Difference]: Finished difference Result 32825 states and 48035 transitions. [2023-12-21 14:14:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:14:24,357 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:24,392 INFO L225 Difference]: With dead ends: 32825 [2023-12-21 14:14:24,392 INFO L226 Difference]: Without dead ends: 30939 [2023-12-21 14:14:24,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:14:24,403 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1603 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:24,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2831 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30939 states. [2023-12-21 14:14:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30939 to 7866. [2023-12-21 14:14:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7866 states, 7865 states have (on average 1.4581055308328035) internal successors, (11468), 7865 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7866 states to 7866 states and 11468 transitions. [2023-12-21 14:14:24,582 INFO L78 Accepts]: Start accepts. Automaton has 7866 states and 11468 transitions. Word has length 123 [2023-12-21 14:14:24,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:24,583 INFO L495 AbstractCegarLoop]: Abstraction has 7866 states and 11468 transitions. [2023-12-21 14:14:24,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7866 states and 11468 transitions. [2023-12-21 14:14:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:24,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:24,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:24,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 14:14:24,584 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:24,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 3428923, now seen corresponding path program 1 times [2023-12-21 14:14:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:24,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949720095] [2023-12-21 14:14:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:27,678 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 14:14:27,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:27,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949720095] [2023-12-21 14:14:27,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949720095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:27,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2023-12-21 14:14:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948917161] [2023-12-21 14:14:27,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:27,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 14:14:27,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 14:14:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1872, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 14:14:27,682 INFO L87 Difference]: Start difference. First operand 7866 states and 11468 transitions. Second operand has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 44 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:42,139 INFO L93 Difference]: Finished difference Result 24044 states and 35128 transitions. [2023-12-21 14:14:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 14:14:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 44 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:42,162 INFO L225 Difference]: With dead ends: 24044 [2023-12-21 14:14:42,162 INFO L226 Difference]: Without dead ends: 22528 [2023-12-21 14:14:42,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1002, Invalid=6308, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 14:14:42,171 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 3467 mSDsluCounter, 27427 mSDsCounter, 0 mSdLazyCounter, 18718 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3467 SdHoareTripleChecker+Valid, 28449 SdHoareTripleChecker+Invalid, 18720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:42,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3467 Valid, 28449 Invalid, 18720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 18718 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-12-21 14:14:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22528 states. [2023-12-21 14:14:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22528 to 7898. [2023-12-21 14:14:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7898 states, 7897 states have (on average 1.4575155122198302) internal successors, (11510), 7897 states have internal predecessors, (11510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7898 states to 7898 states and 11510 transitions. [2023-12-21 14:14:42,363 INFO L78 Accepts]: Start accepts. Automaton has 7898 states and 11510 transitions. Word has length 123 [2023-12-21 14:14:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:42,363 INFO L495 AbstractCegarLoop]: Abstraction has 7898 states and 11510 transitions. [2023-12-21 14:14:42,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 44 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states and 11510 transitions. [2023-12-21 14:14:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:42,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:42,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:42,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 14:14:42,378 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:42,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1270528507, now seen corresponding path program 1 times [2023-12-21 14:14:42,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594234862] [2023-12-21 14:14:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:42,508 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 14:14:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594234862] [2023-12-21 14:14:42,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594234862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:42,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:14:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053053565] [2023-12-21 14:14:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:14:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:14:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:14:42,509 INFO L87 Difference]: Start difference. First operand 7898 states and 11510 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:42,586 INFO L93 Difference]: Finished difference Result 22576 states and 33128 transitions. [2023-12-21 14:14:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:14:42,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:42,617 INFO L225 Difference]: With dead ends: 22576 [2023-12-21 14:14:42,617 INFO L226 Difference]: Without dead ends: 15037 [2023-12-21 14:14:42,648 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 14:14:42,648 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 130 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:42,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 552 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:14:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-21 14:14:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 14635. [2023-12-21 14:14:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14635 states, 14634 states have (on average 1.452302856361897) internal successors, (21253), 14634 states have internal predecessors, (21253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14635 states to 14635 states and 21253 transitions. [2023-12-21 14:14:42,857 INFO L78 Accepts]: Start accepts. Automaton has 14635 states and 21253 transitions. Word has length 123 [2023-12-21 14:14:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:42,857 INFO L495 AbstractCegarLoop]: Abstraction has 14635 states and 21253 transitions. [2023-12-21 14:14:42,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 14635 states and 21253 transitions. [2023-12-21 14:14:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:42,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:42,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:42,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 14:14:42,859 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:42,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1334305886, now seen corresponding path program 1 times [2023-12-21 14:14:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:42,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543845679] [2023-12-21 14:14:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:43,366 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 14:14:43,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:43,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543845679] [2023-12-21 14:14:43,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543845679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:43,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:43,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:14:43,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380048984] [2023-12-21 14:14:43,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:43,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:14:43,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:43,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:14:43,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:43,367 INFO L87 Difference]: Start difference. First operand 14635 states and 21253 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:44,201 INFO L93 Difference]: Finished difference Result 51659 states and 75187 transitions. [2023-12-21 14:14:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 14:14:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:44,257 INFO L225 Difference]: With dead ends: 51659 [2023-12-21 14:14:44,257 INFO L226 Difference]: Without dead ends: 48233 [2023-12-21 14:14:44,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2023-12-21 14:14:44,275 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2221 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:44,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2221 Valid, 2352 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48233 states. [2023-12-21 14:14:44,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48233 to 14659. [2023-12-21 14:14:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14659 states, 14658 states have (on average 1.4524491745122117) internal successors, (21290), 14658 states have internal predecessors, (21290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14659 states to 14659 states and 21290 transitions. [2023-12-21 14:14:44,574 INFO L78 Accepts]: Start accepts. Automaton has 14659 states and 21290 transitions. Word has length 123 [2023-12-21 14:14:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:44,574 INFO L495 AbstractCegarLoop]: Abstraction has 14659 states and 21290 transitions. [2023-12-21 14:14:44,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 14659 states and 21290 transitions. [2023-12-21 14:14:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:44,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:44,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 14:14:44,576 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:44,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1433634203, now seen corresponding path program 1 times [2023-12-21 14:14:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:44,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334318707] [2023-12-21 14:14:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334318707] [2023-12-21 14:14:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334318707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 14:14:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946233924] [2023-12-21 14:14:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:45,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 14:14:45,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:45,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 14:14:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 14:14:45,069 INFO L87 Difference]: Start difference. First operand 14659 states and 21290 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:46,492 INFO L93 Difference]: Finished difference Result 89945 states and 131003 transitions. [2023-12-21 14:14:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 14:14:46,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:46,593 INFO L225 Difference]: With dead ends: 89945 [2023-12-21 14:14:46,594 INFO L226 Difference]: Without dead ends: 86455 [2023-12-21 14:14:46,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2023-12-21 14:14:46,622 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1715 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:46,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 4655 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86455 states. [2023-12-21 14:14:47,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86455 to 14622. [2023-12-21 14:14:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14622 states, 14621 states have (on average 1.452363039463785) internal successors, (21235), 14621 states have internal predecessors, (21235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14622 states to 14622 states and 21235 transitions. [2023-12-21 14:14:47,091 INFO L78 Accepts]: Start accepts. Automaton has 14622 states and 21235 transitions. Word has length 123 [2023-12-21 14:14:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:47,092 INFO L495 AbstractCegarLoop]: Abstraction has 14622 states and 21235 transitions. [2023-12-21 14:14:47,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 14622 states and 21235 transitions. [2023-12-21 14:14:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:47,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:47,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:47,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 14:14:47,093 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:47,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:47,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1785678621, now seen corresponding path program 1 times [2023-12-21 14:14:47,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:47,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812529840] [2023-12-21 14:14:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:47,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:47,745 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 14:14:47,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812529840] [2023-12-21 14:14:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812529840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:47,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 14:14:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668847140] [2023-12-21 14:14:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 14:14:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 14:14:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 14:14:47,747 INFO L87 Difference]: Start difference. First operand 14622 states and 21235 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:48,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:48,986 INFO L93 Difference]: Finished difference Result 51056 states and 74333 transitions. [2023-12-21 14:14:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 14:14:48,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:48,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:49,040 INFO L225 Difference]: With dead ends: 51056 [2023-12-21 14:14:49,040 INFO L226 Difference]: Without dead ends: 47541 [2023-12-21 14:14:49,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2023-12-21 14:14:49,059 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1859 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 3904 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:49,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 3904 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47541 states. [2023-12-21 14:14:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47541 to 14550. [2023-12-21 14:14:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14550 states, 14549 states have (on average 1.4530208261736202) internal successors, (21140), 14549 states have internal predecessors, (21140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14550 states to 14550 states and 21140 transitions. [2023-12-21 14:14:49,360 INFO L78 Accepts]: Start accepts. Automaton has 14550 states and 21140 transitions. Word has length 123 [2023-12-21 14:14:49,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:49,360 INFO L495 AbstractCegarLoop]: Abstraction has 14550 states and 21140 transitions. [2023-12-21 14:14:49,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 14550 states and 21140 transitions. [2023-12-21 14:14:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:49,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:49,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:49,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 14:14:49,361 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:49,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1614080765, now seen corresponding path program 1 times [2023-12-21 14:14:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707599543] [2023-12-21 14:14:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:49,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:49,527 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 14:14:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707599543] [2023-12-21 14:14:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707599543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075476436] [2023-12-21 14:14:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:14:49,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:14:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:14:49,528 INFO L87 Difference]: Start difference. First operand 14550 states and 21140 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:50,053 INFO L93 Difference]: Finished difference Result 43735 states and 63469 transitions. [2023-12-21 14:14:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 14:14:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:50,090 INFO L225 Difference]: With dead ends: 43735 [2023-12-21 14:14:50,090 INFO L226 Difference]: Without dead ends: 29345 [2023-12-21 14:14:50,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:14:50,106 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 867 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:50,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 737 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29345 states. [2023-12-21 14:14:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29345 to 14544. [2023-12-21 14:14:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14544 states, 14543 states have (on average 1.453001443993674) internal successors, (21131), 14543 states have internal predecessors, (21131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14544 states to 14544 states and 21131 transitions. [2023-12-21 14:14:50,483 INFO L78 Accepts]: Start accepts. Automaton has 14544 states and 21131 transitions. Word has length 123 [2023-12-21 14:14:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:50,483 INFO L495 AbstractCegarLoop]: Abstraction has 14544 states and 21131 transitions. [2023-12-21 14:14:50,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14544 states and 21131 transitions. [2023-12-21 14:14:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:14:50,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:50,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:50,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 14:14:50,484 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:50,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 744636702, now seen corresponding path program 1 times [2023-12-21 14:14:50,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:50,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803501844] [2023-12-21 14:14:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:50,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:51,182 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 14:14:51,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:51,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803501844] [2023-12-21 14:14:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803501844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:51,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:51,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 14:14:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206454426] [2023-12-21 14:14:51,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:51,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 14:14:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 14:14:51,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:14:51,183 INFO L87 Difference]: Start difference. First operand 14544 states and 21131 transitions. Second operand has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:52,574 INFO L93 Difference]: Finished difference Result 39233 states and 57165 transitions. [2023-12-21 14:14:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 14:14:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-21 14:14:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:52,617 INFO L225 Difference]: With dead ends: 39233 [2023-12-21 14:14:52,617 INFO L226 Difference]: Without dead ends: 36326 [2023-12-21 14:14:52,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 14:14:52,632 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 1845 mSDsluCounter, 5537 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 6084 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:52,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 6084 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 14:14:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36326 states. [2023-12-21 14:14:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36326 to 14544. [2023-12-21 14:14:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14544 states, 14543 states have (on average 1.4529326823901534) internal successors, (21130), 14543 states have internal predecessors, (21130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14544 states to 14544 states and 21130 transitions. [2023-12-21 14:14:52,903 INFO L78 Accepts]: Start accepts. Automaton has 14544 states and 21130 transitions. Word has length 123 [2023-12-21 14:14:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:52,903 INFO L495 AbstractCegarLoop]: Abstraction has 14544 states and 21130 transitions. [2023-12-21 14:14:52,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 14544 states and 21130 transitions. [2023-12-21 14:14:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 14:14:52,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:52,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 14:14:52,904 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:52,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 717132100, now seen corresponding path program 1 times [2023-12-21 14:14:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:52,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6828479] [2023-12-21 14:14:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:52,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:53,390 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 14:14:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:53,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6828479] [2023-12-21 14:14:53,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6828479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:53,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:53,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:14:53,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239541371] [2023-12-21 14:14:53,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:53,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:14:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:53,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:14:53,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:53,392 INFO L87 Difference]: Start difference. First operand 14544 states and 21130 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:54,313 INFO L93 Difference]: Finished difference Result 60972 states and 88803 transitions. [2023-12-21 14:14:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:14:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-21 14:14:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:54,383 INFO L225 Difference]: With dead ends: 60972 [2023-12-21 14:14:54,383 INFO L226 Difference]: Without dead ends: 57497 [2023-12-21 14:14:54,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:14:54,401 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1499 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:54,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 3112 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57497 states. [2023-12-21 14:14:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57497 to 14500. [2023-12-21 14:14:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14500 states, 14499 states have (on average 1.4532726394923787) internal successors, (21071), 14499 states have internal predecessors, (21071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14500 states to 14500 states and 21071 transitions. [2023-12-21 14:14:54,759 INFO L78 Accepts]: Start accepts. Automaton has 14500 states and 21071 transitions. Word has length 124 [2023-12-21 14:14:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:54,760 INFO L495 AbstractCegarLoop]: Abstraction has 14500 states and 21071 transitions. [2023-12-21 14:14:54,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 14500 states and 21071 transitions. [2023-12-21 14:14:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 14:14:54,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:54,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:54,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 14:14:54,761 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:54,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash -125508407, now seen corresponding path program 1 times [2023-12-21 14:14:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119270187] [2023-12-21 14:14:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:55,332 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 14:14:55,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119270187] [2023-12-21 14:14:55,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119270187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:55,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:55,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 14:14:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639469019] [2023-12-21 14:14:55,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:55,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 14:14:55,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 14:14:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:55,334 INFO L87 Difference]: Start difference. First operand 14500 states and 21071 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:56,182 INFO L93 Difference]: Finished difference Result 60823 states and 88611 transitions. [2023-12-21 14:14:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:14:56,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-21 14:14:56,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:56,254 INFO L225 Difference]: With dead ends: 60823 [2023-12-21 14:14:56,254 INFO L226 Difference]: Without dead ends: 57374 [2023-12-21 14:14:56,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:14:56,276 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1280 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:56,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 3316 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:14:56,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57374 states. [2023-12-21 14:14:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57374 to 14460. [2023-12-21 14:14:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14460 states, 14459 states have (on average 1.4537658205961685) internal successors, (21020), 14459 states have internal predecessors, (21020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14460 states to 14460 states and 21020 transitions. [2023-12-21 14:14:56,697 INFO L78 Accepts]: Start accepts. Automaton has 14460 states and 21020 transitions. Word has length 124 [2023-12-21 14:14:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:56,697 INFO L495 AbstractCegarLoop]: Abstraction has 14460 states and 21020 transitions. [2023-12-21 14:14:56,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 14460 states and 21020 transitions. [2023-12-21 14:14:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 14:14:56,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:56,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:56,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 14:14:56,698 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:56,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash -636474339, now seen corresponding path program 1 times [2023-12-21 14:14:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:56,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057118437] [2023-12-21 14:14:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:57,256 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 14:14:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057118437] [2023-12-21 14:14:57,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057118437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:57,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 14:14:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471174321] [2023-12-21 14:14:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:57,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 14:14:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 14:14:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-21 14:14:57,258 INFO L87 Difference]: Start difference. First operand 14460 states and 21020 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:57,838 INFO L93 Difference]: Finished difference Result 50702 states and 74002 transitions. [2023-12-21 14:14:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:14:57,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-21 14:14:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:57,888 INFO L225 Difference]: With dead ends: 50702 [2023-12-21 14:14:57,888 INFO L226 Difference]: Without dead ends: 47801 [2023-12-21 14:14:57,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:14:57,905 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1475 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:57,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1764 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47801 states. [2023-12-21 14:14:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47801 to 14151. [2023-12-21 14:14:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.4546289752650177) internal successors, (20583), 14150 states have internal predecessors, (20583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 20583 transitions. [2023-12-21 14:14:58,210 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 20583 transitions. Word has length 125 [2023-12-21 14:14:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:58,210 INFO L495 AbstractCegarLoop]: Abstraction has 14151 states and 20583 transitions. [2023-12-21 14:14:58,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 20583 transitions. [2023-12-21 14:14:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 14:14:58,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:58,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:58,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 14:14:58,213 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:58,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:58,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2105527003, now seen corresponding path program 1 times [2023-12-21 14:14:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:58,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038449516] [2023-12-21 14:14:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:58,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:58,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:58,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038449516] [2023-12-21 14:14:58,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038449516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:58,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:58,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:14:58,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618785915] [2023-12-21 14:14:58,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:58,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:14:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:58,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:14:58,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:14:58,294 INFO L87 Difference]: Start difference. First operand 14151 states and 20583 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:58,477 INFO L93 Difference]: Finished difference Result 29479 states and 42956 transitions. [2023-12-21 14:14:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:14:58,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2023-12-21 14:14:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:58,497 INFO L225 Difference]: With dead ends: 29479 [2023-12-21 14:14:58,497 INFO L226 Difference]: Without dead ends: 19653 [2023-12-21 14:14:58,506 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 14:14:58,507 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 110 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:58,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 536 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:14:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19653 states. [2023-12-21 14:14:58,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19653 to 19099. [2023-12-21 14:14:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19099 states, 19098 states have (on average 1.4489998952769922) internal successors, (27673), 19098 states have internal predecessors, (27673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19099 states to 19099 states and 27673 transitions. [2023-12-21 14:14:58,761 INFO L78 Accepts]: Start accepts. Automaton has 19099 states and 27673 transitions. Word has length 160 [2023-12-21 14:14:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:58,761 INFO L495 AbstractCegarLoop]: Abstraction has 19099 states and 27673 transitions. [2023-12-21 14:14:58,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 19099 states and 27673 transitions. [2023-12-21 14:14:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:14:58,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:58,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:58,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 14:14:58,763 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:58,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash -773115492, now seen corresponding path program 1 times [2023-12-21 14:14:58,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:58,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541745792] [2023-12-21 14:14:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:58,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:58,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541745792] [2023-12-21 14:14:58,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541745792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:58,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:58,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:14:58,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755033938] [2023-12-21 14:14:58,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:58,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:14:58,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:58,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:14:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:14:58,876 INFO L87 Difference]: Start difference. First operand 19099 states and 27673 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:14:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:59,444 INFO L93 Difference]: Finished difference Result 115923 states and 167981 transitions. [2023-12-21 14:14:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:14:59,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2023-12-21 14:14:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:59,563 INFO L225 Difference]: With dead ends: 115923 [2023-12-21 14:14:59,563 INFO L226 Difference]: Without dead ends: 96997 [2023-12-21 14:14:59,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:14:59,606 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2403 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:59,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 501 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:14:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96997 states. [2023-12-21 14:15:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96997 to 40663. [2023-12-21 14:15:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40663 states, 40662 states have (on average 1.4474201957601691) internal successors, (58855), 40662 states have internal predecessors, (58855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40663 states to 40663 states and 58855 transitions. [2023-12-21 14:15:00,597 INFO L78 Accepts]: Start accepts. Automaton has 40663 states and 58855 transitions. Word has length 162 [2023-12-21 14:15:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:00,597 INFO L495 AbstractCegarLoop]: Abstraction has 40663 states and 58855 transitions. [2023-12-21 14:15:00,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 40663 states and 58855 transitions. [2023-12-21 14:15:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:15:00,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:00,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:15:00,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 14:15:00,604 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:00,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:00,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1320103792, now seen corresponding path program 1 times [2023-12-21 14:15:00,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:00,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281411898] [2023-12-21 14:15:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:00,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:00,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:00,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281411898] [2023-12-21 14:15:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281411898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:00,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:00,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:15:00,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487878483] [2023-12-21 14:15:00,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:00,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:15:00,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:15:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:00,717 INFO L87 Difference]: Start difference. First operand 40663 states and 58855 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:01,579 INFO L93 Difference]: Finished difference Result 234303 states and 338411 transitions. [2023-12-21 14:15:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:15:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2023-12-21 14:15:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:02,068 INFO L225 Difference]: With dead ends: 234303 [2023-12-21 14:15:02,068 INFO L226 Difference]: Without dead ends: 193813 [2023-12-21 14:15:02,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:02,107 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 2236 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:02,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2236 Valid, 505 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:15:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193813 states. [2023-12-21 14:15:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193813 to 86431. [2023-12-21 14:15:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86431 states, 86430 states have (on average 1.445273631840796) internal successors, (124915), 86430 states have internal predecessors, (124915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86431 states to 86431 states and 124915 transitions. [2023-12-21 14:15:03,618 INFO L78 Accepts]: Start accepts. Automaton has 86431 states and 124915 transitions. Word has length 162 [2023-12-21 14:15:03,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:03,619 INFO L495 AbstractCegarLoop]: Abstraction has 86431 states and 124915 transitions. [2023-12-21 14:15:03,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 86431 states and 124915 transitions. [2023-12-21 14:15:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:15:03,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:03,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:15:03,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 14:15:03,621 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:03,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1156046716, now seen corresponding path program 1 times [2023-12-21 14:15:03,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:03,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29555721] [2023-12-21 14:15:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:03,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29555721] [2023-12-21 14:15:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29555721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:03,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:03,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:15:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291433123] [2023-12-21 14:15:03,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:15:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:15:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:03,897 INFO L87 Difference]: Start difference. First operand 86431 states and 124915 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:05,664 INFO L93 Difference]: Finished difference Result 473703 states and 681911 transitions. [2023-12-21 14:15:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:15:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2023-12-21 14:15:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:06,515 INFO L225 Difference]: With dead ends: 473703 [2023-12-21 14:15:06,515 INFO L226 Difference]: Without dead ends: 387445 [2023-12-21 14:15:06,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:06,650 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2069 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:06,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 509 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:15:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387445 states. [2023-12-21 14:15:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387445 to 183247. [2023-12-21 14:15:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183247 states, 183246 states have (on average 1.443016491492311) internal successors, (264427), 183246 states have internal predecessors, (264427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183247 states to 183247 states and 264427 transitions. [2023-12-21 14:15:10,350 INFO L78 Accepts]: Start accepts. Automaton has 183247 states and 264427 transitions. Word has length 162 [2023-12-21 14:15:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:10,350 INFO L495 AbstractCegarLoop]: Abstraction has 183247 states and 264427 transitions. [2023-12-21 14:15:10,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 183247 states and 264427 transitions. [2023-12-21 14:15:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:15:10,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:10,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:15:10,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 14:15:10,353 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:10,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash 625683253, now seen corresponding path program 1 times [2023-12-21 14:15:10,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:10,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673990516] [2023-12-21 14:15:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673990516] [2023-12-21 14:15:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673990516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:10,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:10,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:15:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342254170] [2023-12-21 14:15:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:15:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:15:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:10,461 INFO L87 Difference]: Start difference. First operand 183247 states and 264427 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:13,570 INFO L93 Difference]: Finished difference Result 957783 states and 1374191 transitions. [2023-12-21 14:15:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:15:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2023-12-21 14:15:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:15,246 INFO L225 Difference]: With dead ends: 957783 [2023-12-21 14:15:15,247 INFO L226 Difference]: Without dead ends: 774709 [2023-12-21 14:15:15,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:15,403 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1902 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:15,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1902 Valid, 513 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:15:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774709 states. [2023-12-21 14:15:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774709 to 387439. [2023-12-21 14:15:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387439 states, 387438 states have (on average 1.440836985530588) internal successors, (558235), 387438 states have internal predecessors, (558235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387439 states to 387439 states and 558235 transitions. [2023-12-21 14:15:23,069 INFO L78 Accepts]: Start accepts. Automaton has 387439 states and 558235 transitions. Word has length 162 [2023-12-21 14:15:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:23,071 INFO L495 AbstractCegarLoop]: Abstraction has 387439 states and 558235 transitions. [2023-12-21 14:15:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 387439 states and 558235 transitions. [2023-12-21 14:15:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:15:23,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:23,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:15:23,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 14:15:23,074 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:23,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash 287292847, now seen corresponding path program 1 times [2023-12-21 14:15:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838880352] [2023-12-21 14:15:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:23,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838880352] [2023-12-21 14:15:23,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838880352] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:15:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321737663] [2023-12-21 14:15:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:23,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:15:23,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:15:23,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 14:15:23,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 14:15:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:23,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 14:15:23,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:15:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:24,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:15:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321737663] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:15:24,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:15:24,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-21 14:15:24,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747336744] [2023-12-21 14:15:24,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:15:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 14:15:24,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:24,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 14:15:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 14:15:24,243 INFO L87 Difference]: Start difference. First operand 387439 states and 558235 transitions. Second operand has 11 states, 11 states have (on average 26.363636363636363) internal successors, (290), 10 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:30,209 INFO L93 Difference]: Finished difference Result 1599927 states and 2293631 transitions. [2023-12-21 14:15:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:15:30,209 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 26.363636363636363) internal successors, (290), 10 states have internal predecessors, (290), 0 states have call successors, (0), 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 162 [2023-12-21 14:15:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:32,869 INFO L225 Difference]: With dead ends: 1599927 [2023-12-21 14:15:32,869 INFO L226 Difference]: Without dead ends: 1212661 [2023-12-21 14:15:33,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 314 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-21 14:15:33,395 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2928 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2928 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:33,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2928 Valid, 523 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:15:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212661 states. [2023-12-21 14:15:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212661 to 812719. [2023-12-21 14:15:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812719 states, 812718 states have (on average 1.4306893658070818) internal successors, (1162747), 812718 states have internal predecessors, (1162747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812719 states to 812719 states and 1162747 transitions. [2023-12-21 14:15:47,875 INFO L78 Accepts]: Start accepts. Automaton has 812719 states and 1162747 transitions. Word has length 162 [2023-12-21 14:15:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:47,875 INFO L495 AbstractCegarLoop]: Abstraction has 812719 states and 1162747 transitions. [2023-12-21 14:15:47,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.363636363636363) internal successors, (290), 10 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 812719 states and 1162747 transitions. [2023-12-21 14:15:47,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:15:47,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:47,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:15:47,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 14:15:48,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-21 14:15:48,086 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:48,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash 687053389, now seen corresponding path program 1 times [2023-12-21 14:15:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:48,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734301124] [2023-12-21 14:15:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:48,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:48,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734301124] [2023-12-21 14:15:48,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734301124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:48,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:48,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:15:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899906088] [2023-12-21 14:15:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:15:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:15:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:48,543 INFO L87 Difference]: Start difference. First operand 812719 states and 1162747 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:57,783 INFO L93 Difference]: Finished difference Result 2227933 states and 3182156 transitions. [2023-12-21 14:15:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:15:57,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2023-12-21 14:15:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:00,481 INFO L225 Difference]: With dead ends: 2227933 [2023-12-21 14:16:00,482 INFO L226 Difference]: Without dead ends: 1415387 [2023-12-21 14:16:01,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:16:01,285 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 2163 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:01,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 545 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:16:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415387 states. [2023-12-21 14:16:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415387 to 851905. [2023-12-21 14:16:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851905 states, 851904 states have (on average 1.4287666215911652) internal successors, (1217172), 851904 states have internal predecessors, (1217172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851905 states to 851905 states and 1217172 transitions. [2023-12-21 14:16:19,953 INFO L78 Accepts]: Start accepts. Automaton has 851905 states and 1217172 transitions. Word has length 162 [2023-12-21 14:16:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:19,953 INFO L495 AbstractCegarLoop]: Abstraction has 851905 states and 1217172 transitions. [2023-12-21 14:16:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 851905 states and 1217172 transitions. [2023-12-21 14:16:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-21 14:16:20,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:20,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:20,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 14:16:20,476 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:20,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2015189583, now seen corresponding path program 1 times [2023-12-21 14:16:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:20,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317927525] [2023-12-21 14:16:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 14:16:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:20,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317927525] [2023-12-21 14:16:20,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317927525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:20,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:20,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878574106] [2023-12-21 14:16:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:20,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,680 INFO L87 Difference]: Start difference. First operand 851905 states and 1217172 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)