/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:16:17,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:16:17,383 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:16:17,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:16:17,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:16:17,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:16:17,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:16:17,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:16:17,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:16:17,412 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:16:17,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:16:17,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:16:17,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:16:17,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:16:17,414 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:16:17,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:16:17,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:16:17,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:16:17,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:16:17,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:16:17,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:16:17,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:16:17,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:16:17,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:16:17,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:16:17,416 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:16:17,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:16:17,417 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:16:17,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:16:17,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:16:17,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:16:17,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:16:17,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:16:17,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:16:17,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:16:17,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:16:17,419 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:16:17,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:16:17,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:16:17,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:16:17,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:16:17,617 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:16:17,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-12-21 14:16:18,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:16:18,705 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:16:18,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-12-21 14:16:18,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614bf2a30/599574bb0bc0400d9bf9a96682d3e044/FLAG7e541dacb [2023-12-21 14:16:18,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614bf2a30/599574bb0bc0400d9bf9a96682d3e044 [2023-12-21 14:16:18,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:16:18,724 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:16:18,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:16:18,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:16:18,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:16:18,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:18" (1/1) ... [2023-12-21 14:16:18,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aed429f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:18, skipping insertion in model container [2023-12-21 14:16:18,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:18" (1/1) ... [2023-12-21 14:16:18,759 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:16:18,900 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7631,7644] [2023-12-21 14:16:18,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:16:18,935 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:16:18,966 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7631,7644] [2023-12-21 14:16:18,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:16:19,007 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:16:19,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19 WrapperNode [2023-12-21 14:16:19,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:16:19,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:16:19,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:16:19,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:16:19,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,051 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 622 [2023-12-21 14:16:19,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:16:19,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:16:19,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:16:19,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:16:19,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,074 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 14:16:19,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:16:19,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:16:19,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:16:19,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:16:19,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (1/1) ... [2023-12-21 14:16:19,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:16:19,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:16:19,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 14:16:19,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 14:16:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:16:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:16:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:16:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:16:19,286 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:16:19,287 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:16:19,634 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:16:19,672 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:16:19,672 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:16:19,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:19 BoogieIcfgContainer [2023-12-21 14:16:19,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:16:19,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:16:19,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:16:19,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:16:19,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:16:18" (1/3) ... [2023-12-21 14:16:19,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78692927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:19, skipping insertion in model container [2023-12-21 14:16:19,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:19" (2/3) ... [2023-12-21 14:16:19,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78692927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:19, skipping insertion in model container [2023-12-21 14:16:19,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:19" (3/3) ... [2023-12-21 14:16:19,678 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-12-21 14:16:19,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:16:19,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:16:19,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:16:19,726 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;@7168ab25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:16:19,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:16:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 1.7651515151515151) internal successors, (233), 133 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 14:16:19,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:19,737 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] [2023-12-21 14:16:19,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:19,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash 555090615, now seen corresponding path program 1 times [2023-12-21 14:16:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:19,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787300727] [2023-12-21 14:16:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:19,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787300727] [2023-12-21 14:16:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787300727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:20,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:20,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681084213] [2023-12-21 14:16:20,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:20,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:20,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,161 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 1.7651515151515151) internal successors, (233), 133 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:20,242 INFO L93 Difference]: Finished difference Result 290 states and 480 transitions. [2023-12-21 14:16:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:20,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-12-21 14:16:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:20,254 INFO L225 Difference]: With dead ends: 290 [2023-12-21 14:16:20,254 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 14:16:20,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,258 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 165 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:20,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 467 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 14:16:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2023-12-21 14:16:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.4477611940298507) internal successors, (291), 201 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 291 transitions. [2023-12-21 14:16:20,300 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 291 transitions. Word has length 85 [2023-12-21 14:16:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:20,300 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 291 transitions. [2023-12-21 14:16:20,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 291 transitions. [2023-12-21 14:16:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 14:16:20,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:20,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:20,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:16:20,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:20,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2129284340, now seen corresponding path program 1 times [2023-12-21 14:16:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767581800] [2023-12-21 14:16:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:20,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:20,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767581800] [2023-12-21 14:16:20,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767581800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:20,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931320641] [2023-12-21 14:16:20,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:20,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:20,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:20,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:20,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,438 INFO L87 Difference]: Start difference. First operand 202 states and 291 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:20,463 INFO L93 Difference]: Finished difference Result 486 states and 743 transitions. [2023-12-21 14:16:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:20,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-21 14:16:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:20,465 INFO L225 Difference]: With dead ends: 486 [2023-12-21 14:16:20,465 INFO L226 Difference]: Without dead ends: 336 [2023-12-21 14:16:20,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,467 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 112 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:20,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 406 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-21 14:16:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2023-12-21 14:16:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.5045045045045045) internal successors, (501), 333 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 501 transitions. [2023-12-21 14:16:20,491 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 501 transitions. Word has length 86 [2023-12-21 14:16:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:20,492 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 501 transitions. [2023-12-21 14:16:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 501 transitions. [2023-12-21 14:16:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 14:16:20,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:20,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:20,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:16:20,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:20,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2096979309, now seen corresponding path program 1 times [2023-12-21 14:16:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:20,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521490311] [2023-12-21 14:16:20,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:20,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:20,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:20,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521490311] [2023-12-21 14:16:20,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521490311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:20,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:20,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:20,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268983066] [2023-12-21 14:16:20,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:20,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:20,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:20,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,589 INFO L87 Difference]: Start difference. First operand 334 states and 501 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:20,608 INFO L93 Difference]: Finished difference Result 866 states and 1347 transitions. [2023-12-21 14:16:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:20,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 14:16:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:20,613 INFO L225 Difference]: With dead ends: 866 [2023-12-21 14:16:20,614 INFO L226 Difference]: Without dead ends: 584 [2023-12-21 14:16:20,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,620 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 107 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:20,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-21 14:16:20,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2023-12-21 14:16:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.5370051635111877) internal successors, (893), 581 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 893 transitions. [2023-12-21 14:16:20,642 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 893 transitions. Word has length 87 [2023-12-21 14:16:20,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:20,642 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 893 transitions. [2023-12-21 14:16:20,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,642 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 893 transitions. [2023-12-21 14:16:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 14:16:20,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:20,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:20,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:16:20,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:20,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:20,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1649402853, now seen corresponding path program 1 times [2023-12-21 14:16:20,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:20,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12908407] [2023-12-21 14:16:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:20,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:20,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:20,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12908407] [2023-12-21 14:16:20,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12908407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:20,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:20,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222781135] [2023-12-21 14:16:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:20,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:20,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,720 INFO L87 Difference]: Start difference. First operand 582 states and 893 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:20,737 INFO L93 Difference]: Finished difference Result 1578 states and 2471 transitions. [2023-12-21 14:16:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 14:16:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:20,742 INFO L225 Difference]: With dead ends: 1578 [2023-12-21 14:16:20,742 INFO L226 Difference]: Without dead ends: 1048 [2023-12-21 14:16:20,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,748 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 102 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:20,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 398 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-21 14:16:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2023-12-21 14:16:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.551196172248804) internal successors, (1621), 1045 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1621 transitions. [2023-12-21 14:16:20,772 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1621 transitions. Word has length 88 [2023-12-21 14:16:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:20,773 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1621 transitions. [2023-12-21 14:16:20,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1621 transitions. [2023-12-21 14:16:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 14:16:20,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:20,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:20,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:16:20,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:20,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2093999040, now seen corresponding path program 1 times [2023-12-21 14:16:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:20,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392288832] [2023-12-21 14:16:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:20,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392288832] [2023-12-21 14:16:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392288832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:20,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864607117] [2023-12-21 14:16:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,873 INFO L87 Difference]: Start difference. First operand 1046 states and 1621 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:20,892 INFO L93 Difference]: Finished difference Result 2906 states and 4551 transitions. [2023-12-21 14:16:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 14:16:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:20,899 INFO L225 Difference]: With dead ends: 2906 [2023-12-21 14:16:20,899 INFO L226 Difference]: Without dead ends: 1912 [2023-12-21 14:16:20,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:20,901 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 97 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:20,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 394 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2023-12-21 14:16:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1910. [2023-12-21 14:16:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 1.5531691985332634) internal successors, (2965), 1909 states have internal predecessors, (2965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2965 transitions. [2023-12-21 14:16:20,931 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2965 transitions. Word has length 89 [2023-12-21 14:16:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:20,932 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 2965 transitions. [2023-12-21 14:16:20,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2965 transitions. [2023-12-21 14:16:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 14:16:20,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:20,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:20,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:16:20,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:20,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 999636698, now seen corresponding path program 1 times [2023-12-21 14:16:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:20,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381352566] [2023-12-21 14:16:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381352566] [2023-12-21 14:16:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381352566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:21,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:21,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:21,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883093928] [2023-12-21 14:16:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:21,009 INFO L87 Difference]: Start difference. First operand 1910 states and 2965 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:21,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:21,058 INFO L93 Difference]: Finished difference Result 5370 states and 8375 transitions. [2023-12-21 14:16:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:21,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-21 14:16:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:21,068 INFO L225 Difference]: With dead ends: 5370 [2023-12-21 14:16:21,068 INFO L226 Difference]: Without dead ends: 3512 [2023-12-21 14:16:21,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:21,071 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 92 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:21,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 390 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2023-12-21 14:16:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3510. [2023-12-21 14:16:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 1.5471644343117696) internal successors, (5429), 3509 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5429 transitions. [2023-12-21 14:16:21,128 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5429 transitions. Word has length 90 [2023-12-21 14:16:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:21,128 INFO L495 AbstractCegarLoop]: Abstraction has 3510 states and 5429 transitions. [2023-12-21 14:16:21,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5429 transitions. [2023-12-21 14:16:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:16:21,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:21,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:21,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:16:21,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:21,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash 335643408, now seen corresponding path program 1 times [2023-12-21 14:16:21,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716457260] [2023-12-21 14:16:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:21,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:21,182 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 14:16:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716457260] [2023-12-21 14:16:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716457260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:21,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:21,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027765190] [2023-12-21 14:16:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:21,184 INFO L87 Difference]: Start difference. First operand 3510 states and 5429 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:21,221 INFO L93 Difference]: Finished difference Result 9914 states and 15351 transitions. [2023-12-21 14:16:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:21,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 14:16:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:21,236 INFO L225 Difference]: With dead ends: 9914 [2023-12-21 14:16:21,237 INFO L226 Difference]: Without dead ends: 6456 [2023-12-21 14:16:21,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:21,244 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 87 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:21,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 386 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2023-12-21 14:16:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 6454. [2023-12-21 14:16:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6454 states, 6453 states have (on average 1.5355648535564854) internal successors, (9909), 6453 states have internal predecessors, (9909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6454 states to 6454 states and 9909 transitions. [2023-12-21 14:16:21,352 INFO L78 Accepts]: Start accepts. Automaton has 6454 states and 9909 transitions. Word has length 91 [2023-12-21 14:16:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:21,352 INFO L495 AbstractCegarLoop]: Abstraction has 6454 states and 9909 transitions. [2023-12-21 14:16:21,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6454 states and 9909 transitions. [2023-12-21 14:16:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 14:16:21,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:21,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:21,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:16:21,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:21,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash 426949996, now seen corresponding path program 1 times [2023-12-21 14:16:21,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:21,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723522588] [2023-12-21 14:16:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:21,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:21,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723522588] [2023-12-21 14:16:21,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723522588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:21,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:21,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:21,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12001649] [2023-12-21 14:16:21,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:21,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:21,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:21,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:21,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:21,504 INFO L87 Difference]: Start difference. First operand 6454 states and 9909 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:22,146 INFO L93 Difference]: Finished difference Result 96082 states and 147907 transitions. [2023-12-21 14:16:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:16:22,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 14:16:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:22,321 INFO L225 Difference]: With dead ends: 96082 [2023-12-21 14:16:22,321 INFO L226 Difference]: Without dead ends: 89680 [2023-12-21 14:16:22,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:16:22,361 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 2471 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:22,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2471 Valid, 3925 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89680 states. [2023-12-21 14:16:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89680 to 12854. [2023-12-21 14:16:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12854 states, 12853 states have (on average 1.5178557535205788) internal successors, (19509), 12853 states have internal predecessors, (19509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12854 states to 12854 states and 19509 transitions. [2023-12-21 14:16:23,372 INFO L78 Accepts]: Start accepts. Automaton has 12854 states and 19509 transitions. Word has length 92 [2023-12-21 14:16:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:23,372 INFO L495 AbstractCegarLoop]: Abstraction has 12854 states and 19509 transitions. [2023-12-21 14:16:23,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 12854 states and 19509 transitions. [2023-12-21 14:16:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 14:16:23,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:23,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:23,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:16:23,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:23,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1355234760, now seen corresponding path program 1 times [2023-12-21 14:16:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925466544] [2023-12-21 14:16:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:23,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:23,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925466544] [2023-12-21 14:16:23,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925466544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:23,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:23,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:16:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432714145] [2023-12-21 14:16:23,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:23,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:16:23,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:16:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:23,436 INFO L87 Difference]: Start difference. First operand 12854 states and 19509 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:23,507 INFO L93 Difference]: Finished difference Result 31868 states and 48377 transitions. [2023-12-21 14:16:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:16:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 14:16:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:23,534 INFO L225 Difference]: With dead ends: 31868 [2023-12-21 14:16:23,535 INFO L226 Difference]: Without dead ends: 19066 [2023-12-21 14:16:23,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:16:23,553 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 78 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 346 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 14:16:23,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 346 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2023-12-21 14:16:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 19064. [2023-12-21 14:16:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.5069506373603316) internal successors, (28727), 19063 states have internal predecessors, (28727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28727 transitions. [2023-12-21 14:16:23,908 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28727 transitions. Word has length 94 [2023-12-21 14:16:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:23,908 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28727 transitions. [2023-12-21 14:16:23,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28727 transitions. [2023-12-21 14:16:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 14:16:23,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:23,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:23,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:16:23,910 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:23,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1376237415, now seen corresponding path program 1 times [2023-12-21 14:16:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:23,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879478937] [2023-12-21 14:16:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:24,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:24,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879478937] [2023-12-21 14:16:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879478937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:24,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692316369] [2023-12-21 14:16:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:24,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:24,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:24,334 INFO L87 Difference]: Start difference. First operand 19064 states and 28727 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:24,652 INFO L93 Difference]: Finished difference Result 38076 states and 57401 transitions. [2023-12-21 14:16:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:24,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 14:16:24,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:24,684 INFO L225 Difference]: With dead ends: 38076 [2023-12-21 14:16:24,684 INFO L226 Difference]: Without dead ends: 19066 [2023-12-21 14:16:24,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-21 14:16:24,702 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 376 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:24,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 913 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2023-12-21 14:16:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 19064. [2023-12-21 14:16:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4968787703929076) internal successors, (28535), 19063 states have internal predecessors, (28535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28535 transitions. [2023-12-21 14:16:24,978 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28535 transitions. Word has length 94 [2023-12-21 14:16:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:24,978 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28535 transitions. [2023-12-21 14:16:24,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28535 transitions. [2023-12-21 14:16:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:24,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:24,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:24,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:16:24,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:24,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:24,979 INFO L85 PathProgramCache]: Analyzing trace with hash -288222367, now seen corresponding path program 1 times [2023-12-21 14:16:24,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:24,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497092300] [2023-12-21 14:16:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:24,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497092300] [2023-12-21 14:16:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497092300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:25,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:25,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:16:25,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762741429] [2023-12-21 14:16:25,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:25,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:16:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:16:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:16:25,059 INFO L87 Difference]: Start difference. First operand 19064 states and 28535 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:25,189 INFO L93 Difference]: Finished difference Result 38074 states and 57016 transitions. [2023-12-21 14:16:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:16:25,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:16:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:25,218 INFO L225 Difference]: With dead ends: 38074 [2023-12-21 14:16:25,218 INFO L226 Difference]: Without dead ends: 19064 [2023-12-21 14:16:25,235 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 14:16:25,236 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 447 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:25,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 129 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-21 14:16:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-21 14:16:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4868069034254838) internal successors, (28343), 19063 states have internal predecessors, (28343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28343 transitions. [2023-12-21 14:16:25,557 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28343 transitions. Word has length 95 [2023-12-21 14:16:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:25,557 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28343 transitions. [2023-12-21 14:16:25,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28343 transitions. [2023-12-21 14:16:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:25,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:25,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:25,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:16:25,558 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:25,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:25,558 INFO L85 PathProgramCache]: Analyzing trace with hash 80048860, now seen corresponding path program 1 times [2023-12-21 14:16:25,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:25,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960460012] [2023-12-21 14:16:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:25,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960460012] [2023-12-21 14:16:25,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960460012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:25,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:25,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:16:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468144156] [2023-12-21 14:16:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:25,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:16:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:25,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:16:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:16:25,654 INFO L87 Difference]: Start difference. First operand 19064 states and 28343 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:25,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:25,910 INFO L93 Difference]: Finished difference Result 38074 states and 56632 transitions. [2023-12-21 14:16:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:16:25,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:16:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:25,959 INFO L225 Difference]: With dead ends: 38074 [2023-12-21 14:16:25,960 INFO L226 Difference]: Without dead ends: 19064 [2023-12-21 14:16:25,980 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 14:16:25,981 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 418 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:25,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 145 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-21 14:16:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-21 14:16:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.47673503645806) internal successors, (28151), 19063 states have internal predecessors, (28151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 28151 transitions. [2023-12-21 14:16:26,198 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 28151 transitions. Word has length 95 [2023-12-21 14:16:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:26,199 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 28151 transitions. [2023-12-21 14:16:26,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 28151 transitions. [2023-12-21 14:16:26,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:26,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:26,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:16:26,200 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:26,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 208134167, now seen corresponding path program 1 times [2023-12-21 14:16:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644984136] [2023-12-21 14:16:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:26,317 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 14:16:26,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644984136] [2023-12-21 14:16:26,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644984136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:26,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:16:26,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61165828] [2023-12-21 14:16:26,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:26,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:16:26,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:16:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:16:26,319 INFO L87 Difference]: Start difference. First operand 19064 states and 28151 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:26,519 INFO L93 Difference]: Finished difference Result 38074 states and 56248 transitions. [2023-12-21 14:16:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:16:26,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:16:26,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:26,545 INFO L225 Difference]: With dead ends: 38074 [2023-12-21 14:16:26,546 INFO L226 Difference]: Without dead ends: 19064 [2023-12-21 14:16:26,559 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 14:16:26,560 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 389 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:26,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 161 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-21 14:16:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-21 14:16:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4666631694906362) internal successors, (27959), 19063 states have internal predecessors, (27959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 27959 transitions. [2023-12-21 14:16:26,755 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 27959 transitions. Word has length 95 [2023-12-21 14:16:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:26,755 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 27959 transitions. [2023-12-21 14:16:26,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 27959 transitions. [2023-12-21 14:16:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:26,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:26,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:26,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:16:26,756 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:26,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:26,757 INFO L85 PathProgramCache]: Analyzing trace with hash -321156334, now seen corresponding path program 1 times [2023-12-21 14:16:26,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:26,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737932698] [2023-12-21 14:16:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:26,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:26,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:26,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737932698] [2023-12-21 14:16:26,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737932698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:26,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:26,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:16:26,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321270420] [2023-12-21 14:16:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:26,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:16:26,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:26,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:16:26,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:16:26,902 INFO L87 Difference]: Start difference. First operand 19064 states and 27959 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:27,021 INFO L93 Difference]: Finished difference Result 38074 states and 55864 transitions. [2023-12-21 14:16:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:16:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:16:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:27,046 INFO L225 Difference]: With dead ends: 38074 [2023-12-21 14:16:27,046 INFO L226 Difference]: Without dead ends: 19064 [2023-12-21 14:16:27,061 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 14:16:27,061 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 425 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:27,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 137 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-21 14:16:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-21 14:16:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4565913025232125) internal successors, (27767), 19063 states have internal predecessors, (27767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 27767 transitions. [2023-12-21 14:16:27,265 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 27767 transitions. Word has length 95 [2023-12-21 14:16:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:27,265 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 27767 transitions. [2023-12-21 14:16:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 27767 transitions. [2023-12-21 14:16:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:27,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:27,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:27,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:16:27,266 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:27,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1084020041, now seen corresponding path program 1 times [2023-12-21 14:16:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:27,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107467635] [2023-12-21 14:16:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:27,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107467635] [2023-12-21 14:16:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107467635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:27,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:27,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:16:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337162515] [2023-12-21 14:16:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:27,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:16:27,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:16:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:16:27,335 INFO L87 Difference]: Start difference. First operand 19064 states and 27767 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:27,506 INFO L93 Difference]: Finished difference Result 38074 states and 55480 transitions. [2023-12-21 14:16:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:16:27,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:16:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:27,528 INFO L225 Difference]: With dead ends: 38074 [2023-12-21 14:16:27,529 INFO L226 Difference]: Without dead ends: 19064 [2023-12-21 14:16:27,545 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 14:16:27,546 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 448 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:27,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 121 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2023-12-21 14:16:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19064. [2023-12-21 14:16:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.4465194355557887) internal successors, (27575), 19063 states have internal predecessors, (27575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 27575 transitions. [2023-12-21 14:16:27,784 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 27575 transitions. Word has length 95 [2023-12-21 14:16:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:27,784 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 27575 transitions. [2023-12-21 14:16:27,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 27575 transitions. [2023-12-21 14:16:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:16:27,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:27,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:27,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:16:27,786 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:27,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1469530140, now seen corresponding path program 1 times [2023-12-21 14:16:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:27,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674055886] [2023-12-21 14:16:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:27,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:27,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:27,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674055886] [2023-12-21 14:16:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674055886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:16:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623265329] [2023-12-21 14:16:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:27,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:16:27,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:16:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:16:27,959 INFO L87 Difference]: Start difference. First operand 19064 states and 27575 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:28,105 INFO L93 Difference]: Finished difference Result 34476 states and 49684 transitions. [2023-12-21 14:16:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:16:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 14:16:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:28,136 INFO L225 Difference]: With dead ends: 34476 [2023-12-21 14:16:28,136 INFO L226 Difference]: Without dead ends: 34474 [2023-12-21 14:16:28,140 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 14:16:28,141 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 228 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:28,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 788 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:16:28,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34474 states. [2023-12-21 14:16:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34474 to 19576. [2023-12-21 14:16:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19576 states, 19575 states have (on average 1.4315708812260537) internal successors, (28023), 19575 states have internal predecessors, (28023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19576 states to 19576 states and 28023 transitions. [2023-12-21 14:16:28,372 INFO L78 Accepts]: Start accepts. Automaton has 19576 states and 28023 transitions. Word has length 95 [2023-12-21 14:16:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:28,373 INFO L495 AbstractCegarLoop]: Abstraction has 19576 states and 28023 transitions. [2023-12-21 14:16:28,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 19576 states and 28023 transitions. [2023-12-21 14:16:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:16:28,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:28,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:28,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:16:28,380 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:28,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2086990711, now seen corresponding path program 1 times [2023-12-21 14:16:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:28,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019263652] [2023-12-21 14:16:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:28,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:16:28,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019263652] [2023-12-21 14:16:28,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019263652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:28,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017714026] [2023-12-21 14:16:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:28,530 INFO L87 Difference]: Start difference. First operand 19576 states and 28023 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:28,947 INFO L93 Difference]: Finished difference Result 153608 states and 219999 transitions. [2023-12-21 14:16:28,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:28,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 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 129 [2023-12-21 14:16:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:29,133 INFO L225 Difference]: With dead ends: 153608 [2023-12-21 14:16:29,133 INFO L226 Difference]: Without dead ends: 140294 [2023-12-21 14:16:29,187 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 14:16:29,188 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2071 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:29,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 1967 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140294 states. [2023-12-21 14:16:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140294 to 36024. [2023-12-21 14:16:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36024 states, 36023 states have (on average 1.4272825694695055) internal successors, (51415), 36023 states have internal predecessors, (51415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36024 states to 36024 states and 51415 transitions. [2023-12-21 14:16:30,306 INFO L78 Accepts]: Start accepts. Automaton has 36024 states and 51415 transitions. Word has length 129 [2023-12-21 14:16:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:30,306 INFO L495 AbstractCegarLoop]: Abstraction has 36024 states and 51415 transitions. [2023-12-21 14:16:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 36024 states and 51415 transitions. [2023-12-21 14:16:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:16:30,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:30,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:30,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:16:30,314 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:30,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1020070641, now seen corresponding path program 1 times [2023-12-21 14:16:30,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:30,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378056579] [2023-12-21 14:16:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 14:16:30,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378056579] [2023-12-21 14:16:30,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378056579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:30,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:30,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:30,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671070133] [2023-12-21 14:16:30,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:30,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:30,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:30,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:30,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:30,472 INFO L87 Difference]: Start difference. First operand 36024 states and 51415 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:30,953 INFO L93 Difference]: Finished difference Result 173128 states and 247839 transitions. [2023-12-21 14:16:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 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 129 [2023-12-21 14:16:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:31,137 INFO L225 Difference]: With dead ends: 173128 [2023-12-21 14:16:31,137 INFO L226 Difference]: Without dead ends: 153606 [2023-12-21 14:16:31,191 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 14:16:31,191 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 2072 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:31,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 1900 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153606 states. [2023-12-21 14:16:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153606 to 62200. [2023-12-21 14:16:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62200 states, 62199 states have (on average 1.4244441228958664) internal successors, (88599), 62199 states have internal predecessors, (88599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62200 states to 62200 states and 88599 transitions. [2023-12-21 14:16:33,191 INFO L78 Accepts]: Start accepts. Automaton has 62200 states and 88599 transitions. Word has length 129 [2023-12-21 14:16:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:33,191 INFO L495 AbstractCegarLoop]: Abstraction has 62200 states and 88599 transitions. [2023-12-21 14:16:33,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 62200 states and 88599 transitions. [2023-12-21 14:16:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:16:33,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:33,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:33,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:16:33,200 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:33,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 78062119, now seen corresponding path program 1 times [2023-12-21 14:16:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:33,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414210173] [2023-12-21 14:16:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:33,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 14:16:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:33,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414210173] [2023-12-21 14:16:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414210173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:33,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:33,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:33,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940570565] [2023-12-21 14:16:33,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:33,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:33,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:33,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:33,345 INFO L87 Difference]: Start difference. First operand 62200 states and 88599 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:33,930 INFO L93 Difference]: Finished difference Result 192648 states and 275615 transitions. [2023-12-21 14:16:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-21 14:16:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:34,240 INFO L225 Difference]: With dead ends: 192648 [2023-12-21 14:16:34,241 INFO L226 Difference]: Without dead ends: 173126 [2023-12-21 14:16:34,254 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 14:16:34,255 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 2170 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:34,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 2056 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:16:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173126 states. [2023-12-21 14:16:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173126 to 81720. [2023-12-21 14:16:35,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81720 states, 81719 states have (on average 1.4240874215298767) internal successors, (116375), 81719 states have internal predecessors, (116375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81720 states to 81720 states and 116375 transitions. [2023-12-21 14:16:35,549 INFO L78 Accepts]: Start accepts. Automaton has 81720 states and 116375 transitions. Word has length 129 [2023-12-21 14:16:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:35,549 INFO L495 AbstractCegarLoop]: Abstraction has 81720 states and 116375 transitions. [2023-12-21 14:16:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 81720 states and 116375 transitions. [2023-12-21 14:16:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:16:35,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:35,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:35,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:16:35,559 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:35,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:35,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1075883987, now seen corresponding path program 1 times [2023-12-21 14:16:35,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:35,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86995992] [2023-12-21 14:16:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:35,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 14:16:35,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:35,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86995992] [2023-12-21 14:16:35,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86995992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:35,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:35,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819273629] [2023-12-21 14:16:35,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:35,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:35,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:35,687 INFO L87 Difference]: Start difference. First operand 81720 states and 116375 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:36,700 INFO L93 Difference]: Finished difference Result 212168 states and 303391 transitions. [2023-12-21 14:16:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:36,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-21 14:16:36,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:36,945 INFO L225 Difference]: With dead ends: 212168 [2023-12-21 14:16:36,946 INFO L226 Difference]: Without dead ends: 192646 [2023-12-21 14:16:36,990 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 14:16:36,992 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1999 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:36,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 2127 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:37,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192646 states. [2023-12-21 14:16:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192646 to 101240. [2023-12-21 14:16:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101240 states, 101239 states have (on average 1.4238682721085747) internal successors, (144151), 101239 states have internal predecessors, (144151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101240 states to 101240 states and 144151 transitions. [2023-12-21 14:16:38,845 INFO L78 Accepts]: Start accepts. Automaton has 101240 states and 144151 transitions. Word has length 129 [2023-12-21 14:16:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:38,845 INFO L495 AbstractCegarLoop]: Abstraction has 101240 states and 144151 transitions. [2023-12-21 14:16:38,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 101240 states and 144151 transitions. [2023-12-21 14:16:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:16:38,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:38,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:38,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:16:38,853 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:38,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash -779838559, now seen corresponding path program 1 times [2023-12-21 14:16:38,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:38,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495560252] [2023-12-21 14:16:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:38,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 14:16:38,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495560252] [2023-12-21 14:16:38,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495560252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:38,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:38,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:38,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154349461] [2023-12-21 14:16:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:38,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:38,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:38,986 INFO L87 Difference]: Start difference. First operand 101240 states and 144151 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:39,833 INFO L93 Difference]: Finished difference Result 231688 states and 331167 transitions. [2023-12-21 14:16:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:39,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-21 14:16:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:40,339 INFO L225 Difference]: With dead ends: 231688 [2023-12-21 14:16:40,339 INFO L226 Difference]: Without dead ends: 212166 [2023-12-21 14:16:40,366 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 14:16:40,368 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1746 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:40,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 2274 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212166 states. [2023-12-21 14:16:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212166 to 120760. [2023-12-21 14:16:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120760 states, 120759 states have (on average 1.4237199711822721) internal successors, (171927), 120759 states have internal predecessors, (171927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120760 states to 120760 states and 171927 transitions. [2023-12-21 14:16:42,483 INFO L78 Accepts]: Start accepts. Automaton has 120760 states and 171927 transitions. Word has length 129 [2023-12-21 14:16:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:42,483 INFO L495 AbstractCegarLoop]: Abstraction has 120760 states and 171927 transitions. [2023-12-21 14:16:42,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand 120760 states and 171927 transitions. [2023-12-21 14:16:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:16:42,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:42,505 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:42,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:16:42,506 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:42,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 648658075, now seen corresponding path program 1 times [2023-12-21 14:16:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530489758] [2023-12-21 14:16:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 14:16:42,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530489758] [2023-12-21 14:16:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530489758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:42,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:42,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158296094] [2023-12-21 14:16:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:42,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:42,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:42,643 INFO L87 Difference]: Start difference. First operand 120760 states and 171927 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 14:16:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:43,447 INFO L93 Difference]: Finished difference Result 251208 states and 358943 transitions. [2023-12-21 14:16:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:43,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 129 [2023-12-21 14:16:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:43,766 INFO L225 Difference]: With dead ends: 251208 [2023-12-21 14:16:43,766 INFO L226 Difference]: Without dead ends: 231686 [2023-12-21 14:16:43,825 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 14:16:43,826 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1730 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:43,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 2305 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231686 states. [2023-12-21 14:16:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231686 to 140280. [2023-12-21 14:16:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140280 states, 140279 states have (on average 1.4236129427783204) internal successors, (199703), 140279 states have internal predecessors, (199703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140280 states to 140280 states and 199703 transitions. [2023-12-21 14:16:46,209 INFO L78 Accepts]: Start accepts. Automaton has 140280 states and 199703 transitions. Word has length 129 [2023-12-21 14:16:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:46,210 INFO L495 AbstractCegarLoop]: Abstraction has 140280 states and 199703 transitions. [2023-12-21 14:16:46,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 14:16:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 140280 states and 199703 transitions. [2023-12-21 14:16:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:16:46,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:46,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:46,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:16:46,221 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:46,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:46,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1670871787, now seen corresponding path program 1 times [2023-12-21 14:16:46,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:46,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585195518] [2023-12-21 14:16:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 14:16:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585195518] [2023-12-21 14:16:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585195518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:16:46,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:16:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:16:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705740443] [2023-12-21 14:16:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:16:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:16:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:16:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:16:46,653 INFO L87 Difference]: Start difference. First operand 140280 states and 199703 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:47,535 INFO L93 Difference]: Finished difference Result 270728 states and 386719 transitions. [2023-12-21 14:16:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:16:47,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 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 129 [2023-12-21 14:16:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:47,897 INFO L225 Difference]: With dead ends: 270728 [2023-12-21 14:16:47,897 INFO L226 Difference]: Without dead ends: 251206 [2023-12-21 14:16:47,954 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 14:16:47,954 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1828 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:47,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 2295 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:16:48,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251206 states. [2023-12-21 14:16:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251206 to 159800. [2023-12-21 14:16:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159800 states, 159799 states have (on average 1.4235320621530798) internal successors, (227479), 159799 states have internal predecessors, (227479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159800 states to 159800 states and 227479 transitions. [2023-12-21 14:16:50,507 INFO L78 Accepts]: Start accepts. Automaton has 159800 states and 227479 transitions. Word has length 129 [2023-12-21 14:16:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:50,507 INFO L495 AbstractCegarLoop]: Abstraction has 159800 states and 227479 transitions. [2023-12-21 14:16:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 159800 states and 227479 transitions. [2023-12-21 14:16:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:16:50,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:50,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:16:50,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:16:50,523 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:50,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash 655202412, now seen corresponding path program 1 times [2023-12-21 14:16:50,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:50,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188184894] [2023-12-21 14:16:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:50,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:51,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:51,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188184894] [2023-12-21 14:16:51,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188184894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:16:51,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055964586] [2023-12-21 14:16:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:51,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:16:51,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:16:51,194 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 14:16:51,201 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 14:16:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:51,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 14:16:51,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:16:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:16:51,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:16:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:16:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055964586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:16:51,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:16:51,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-21 14:16:51,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553385531] [2023-12-21 14:16:51,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:16:51,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 14:16:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 14:16:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-21 14:16:51,906 INFO L87 Difference]: Start difference. First operand 159800 states and 227479 transitions. Second operand has 18 states, 18 states have (on average 20.944444444444443) internal successors, (377), 18 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:17:04,449 INFO L93 Difference]: Finished difference Result 2097061 states and 2950020 transitions. [2023-12-21 14:17:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-12-21 14:17:04,450 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.944444444444443) internal successors, (377), 18 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 14:17:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:17:07,921 INFO L225 Difference]: With dead ends: 2097061 [2023-12-21 14:17:07,921 INFO L226 Difference]: Without dead ends: 1937315 [2023-12-21 14:17:08,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13651 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5084, Invalid=25716, Unknown=0, NotChecked=0, Total=30800 [2023-12-21 14:17:08,305 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 11517 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11517 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:17:08,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11517 Valid, 2957 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 14:17:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937315 states. [2023-12-21 14:17:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937315 to 814072. [2023-12-21 14:17:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814072 states, 814071 states have (on average 1.39548393199119) internal successors, (1136023), 814071 states have internal predecessors, (1136023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814072 states to 814072 states and 1136023 transitions. [2023-12-21 14:17:25,598 INFO L78 Accepts]: Start accepts. Automaton has 814072 states and 1136023 transitions. Word has length 130 [2023-12-21 14:17:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:17:25,599 INFO L495 AbstractCegarLoop]: Abstraction has 814072 states and 1136023 transitions. [2023-12-21 14:17:25,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.944444444444443) internal successors, (377), 18 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:17:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 814072 states and 1136023 transitions. [2023-12-21 14:17:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 14:17:25,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:17:25,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:17:25,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 14:17:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-21 14:17:25,825 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:17:25,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:17:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1514106523, now seen corresponding path program 1 times [2023-12-21 14:17:25,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:17:25,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524237066] [2023-12-21 14:17:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:25,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:17:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:26,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:17:26,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524237066] [2023-12-21 14:17:26,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524237066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:17:26,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55268734] [2023-12-21 14:17:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:17:26,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:17:26,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:17:26,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 14:17:26,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 14:17:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:17:26,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 14:17:26,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:17:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:26,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:17:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:17:27,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55268734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:17:27,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:17:27,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-21 14:17:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680931470] [2023-12-21 14:17:27,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:17:27,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 14:17:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:17:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 14:17:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-21 14:17:27,511 INFO L87 Difference]: Start difference. First operand 814072 states and 1136023 transitions. Second operand has 23 states, 23 states have (on average 16.391304347826086) internal successors, (377), 22 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)