/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:16:21,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:16:21,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:16:21,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:16:21,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:16:21,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:16:21,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:16:21,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:16:21,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:16:21,256 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:16:21,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:16:21,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:16:21,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:16:21,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:16:21,258 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:16:21,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:16:21,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:16:21,259 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:16:21,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:16:21,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:16:21,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:16:21,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:16:21,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:16:21,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:16:21,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:16:21,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:16:21,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:16:21,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:16:21,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:16:21,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:16:21,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:16:21,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:16:21,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:16:21,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:16:21,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:16:21,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:16:21,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:16:21,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:16:21,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:16:21,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:16:21,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:16:21,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:16:21,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:16:21,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:16:21,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:16:21,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:16:21,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:16:21,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:16:21,454 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:16:21,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c [2023-12-15 23:16:22,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:16:22,626 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:16:22,627 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c [2023-12-15 23:16:22,637 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bcd8d79f/007f6e1cc4554127a27f98b64680a79a/FLAG565850634 [2023-12-15 23:16:22,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bcd8d79f/007f6e1cc4554127a27f98b64680a79a [2023-12-15 23:16:22,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:16:22,653 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:16:22,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:16:22,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:16:22,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:16:22,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f65d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22, skipping insertion in model container [2023-12-15 23:16:22,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,699 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:16:22,867 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/pals_lcr.6.ufo.UNBOUNDED.pals.c[15103,15116] [2023-12-15 23:16:22,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:16:22,883 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:16:22,915 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/pals_lcr.6.ufo.UNBOUNDED.pals.c[15103,15116] [2023-12-15 23:16:22,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:16:22,926 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:16:22,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22 WrapperNode [2023-12-15 23:16:22,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:16:22,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:16:22,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:16:22,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:16:22,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,956 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 390 [2023-12-15 23:16:22,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:16:22,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:16:22,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:16:22,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:16:22,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,977 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]. [2023-12-15 23:16:22,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:16:22,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:16:22,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:16:22,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:16:22,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (1/1) ... [2023-12-15 23:16:22,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:16:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:16:23,040 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) [2023-12-15 23:16:23,061 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 [2023-12-15 23:16:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:16:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:16:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:16:23,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:16:23,154 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:16:23,156 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:16:23,522 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:16:23,557 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:16:23,558 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:16:23,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:16:23 BoogieIcfgContainer [2023-12-15 23:16:23,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:16:23,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:16:23,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:16:23,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:16:23,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:16:22" (1/3) ... [2023-12-15 23:16:23,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28481552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:16:23, skipping insertion in model container [2023-12-15 23:16:23,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:16:22" (2/3) ... [2023-12-15 23:16:23,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28481552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:16:23, skipping insertion in model container [2023-12-15 23:16:23,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:16:23" (3/3) ... [2023-12-15 23:16:23,564 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c [2023-12-15 23:16:23,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:16:23,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:16:23,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:16:23,611 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;@617e21c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:16:23,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:16:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.8064516129032258) internal successors, (168), 94 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 23:16:23,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:23,622 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] [2023-12-15 23:16:23,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:23,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1995138295, now seen corresponding path program 1 times [2023-12-15 23:16:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:23,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144428139] [2023-12-15 23:16:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:23,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144428139] [2023-12-15 23:16:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144428139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:23,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:16:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911011086] [2023-12-15 23:16:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:23,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 23:16:23,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 23:16:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:16:23,842 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.8064516129032258) internal successors, (168), 94 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:23,875 INFO L93 Difference]: Finished difference Result 145 states and 251 transitions. [2023-12-15 23:16:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 23:16:23,877 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-15 23:16:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:23,883 INFO L225 Difference]: With dead ends: 145 [2023-12-15 23:16:23,883 INFO L226 Difference]: Without dead ends: 93 [2023-12-15 23:16:23,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:16:23,888 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:23,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:23,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-15 23:16:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-15 23:16:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.7717391304347827) internal successors, (163), 92 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 163 transitions. [2023-12-15 23:16:23,921 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 163 transitions. Word has length 22 [2023-12-15 23:16:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:23,921 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 163 transitions. [2023-12-15 23:16:23,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 163 transitions. [2023-12-15 23:16:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 23:16:23,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:23,925 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] [2023-12-15 23:16:23,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:16:23,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:23,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 610885259, now seen corresponding path program 1 times [2023-12-15 23:16:23,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:23,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052488273] [2023-12-15 23:16:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:23,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:24,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052488273] [2023-12-15 23:16:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052488273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:24,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:24,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:16:24,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569162350] [2023-12-15 23:16:24,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:24,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:16:24,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:16:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:16:24,061 INFO L87 Difference]: Start difference. First operand 93 states and 163 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:24,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:24,143 INFO L93 Difference]: Finished difference Result 145 states and 245 transitions. [2023-12-15 23:16:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:16:24,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-15 23:16:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:24,148 INFO L225 Difference]: With dead ends: 145 [2023-12-15 23:16:24,148 INFO L226 Difference]: Without dead ends: 93 [2023-12-15 23:16:24,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:16:24,149 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 437 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:24,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-15 23:16:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-15 23:16:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 92 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) [2023-12-15 23:16:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 123 transitions. [2023-12-15 23:16:24,154 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 123 transitions. Word has length 22 [2023-12-15 23:16:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:24,155 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 123 transitions. [2023-12-15 23:16:24,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 123 transitions. [2023-12-15 23:16:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 23:16:24,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:24,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:24,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:16:24,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:24,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:24,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1005779790, now seen corresponding path program 1 times [2023-12-15 23:16:24,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:24,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605448971] [2023-12-15 23:16:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:24,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:24,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605448971] [2023-12-15 23:16:24,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605448971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:24,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:24,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:24,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085106270] [2023-12-15 23:16:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:24,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:24,392 INFO L87 Difference]: Start difference. First operand 93 states and 123 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:24,686 INFO L93 Difference]: Finished difference Result 681 states and 1071 transitions. [2023-12-15 23:16:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 23:16:24,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 23:16:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:24,694 INFO L225 Difference]: With dead ends: 681 [2023-12-15 23:16:24,694 INFO L226 Difference]: Without dead ends: 632 [2023-12-15 23:16:24,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:16:24,697 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1142 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:24,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1849 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-15 23:16:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 140. [2023-12-15 23:16:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4316546762589928) internal successors, (199), 139 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 199 transitions. [2023-12-15 23:16:24,727 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 199 transitions. Word has length 61 [2023-12-15 23:16:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:24,727 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 199 transitions. [2023-12-15 23:16:24,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 199 transitions. [2023-12-15 23:16:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:16:24,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:24,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:24,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:16:24,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:24,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash -571741034, now seen corresponding path program 1 times [2023-12-15 23:16:24,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:24,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850333601] [2023-12-15 23:16:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:24,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850333601] [2023-12-15 23:16:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850333601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902593886] [2023-12-15 23:16:25,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:25,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:25,043 INFO L87 Difference]: Start difference. First operand 140 states and 199 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:25,219 INFO L93 Difference]: Finished difference Result 238 states and 355 transitions. [2023-12-15 23:16:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:16:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:16:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:25,221 INFO L225 Difference]: With dead ends: 238 [2023-12-15 23:16:25,221 INFO L226 Difference]: Without dead ends: 142 [2023-12-15 23:16:25,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:16:25,228 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 370 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:25,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 485 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-15 23:16:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-12-15 23:16:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 139 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 198 transitions. [2023-12-15 23:16:25,239 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 198 transitions. Word has length 63 [2023-12-15 23:16:25,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:25,239 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 198 transitions. [2023-12-15 23:16:25,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 198 transitions. [2023-12-15 23:16:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:16:25,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:25,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:25,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:16:25,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:25,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -573885986, now seen corresponding path program 1 times [2023-12-15 23:16:25,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:25,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717315658] [2023-12-15 23:16:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:25,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717315658] [2023-12-15 23:16:25,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717315658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:25,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726778513] [2023-12-15 23:16:25,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:25,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:25,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:25,327 INFO L87 Difference]: Start difference. First operand 140 states and 198 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:25,346 INFO L93 Difference]: Finished difference Result 321 states and 487 transitions. [2023-12-15 23:16:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:25,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 23:16:25,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:25,348 INFO L225 Difference]: With dead ends: 321 [2023-12-15 23:16:25,348 INFO L226 Difference]: Without dead ends: 225 [2023-12-15 23:16:25,350 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 [2023-12-15 23:16:25,350 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 52 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:25,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 187 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-15 23:16:25,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2023-12-15 23:16:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4772727272727273) internal successors, (325), 220 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2023-12-15 23:16:25,360 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 63 [2023-12-15 23:16:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:25,361 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2023-12-15 23:16:25,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2023-12-15 23:16:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 23:16:25,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:25,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:16:25,362 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:25,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash -558175355, now seen corresponding path program 1 times [2023-12-15 23:16:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444536446] [2023-12-15 23:16:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:25,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444536446] [2023-12-15 23:16:25,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444536446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:16:25,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174044574] [2023-12-15 23:16:25,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:16:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:16:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:16:25,502 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:25,518 INFO L93 Difference]: Finished difference Result 229 states and 334 transitions. [2023-12-15 23:16:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:16:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 23:16:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:25,519 INFO L225 Difference]: With dead ends: 229 [2023-12-15 23:16:25,519 INFO L226 Difference]: Without dead ends: 227 [2023-12-15 23:16:25,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:16:25,520 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:25,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 349 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-15 23:16:25,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2023-12-15 23:16:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 224 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2023-12-15 23:16:25,524 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 64 [2023-12-15 23:16:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:25,524 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2023-12-15 23:16:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2023-12-15 23:16:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:16:25,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:25,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:25,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:16:25,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:25,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1082045802, now seen corresponding path program 1 times [2023-12-15 23:16:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:25,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779376716] [2023-12-15 23:16:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779376716] [2023-12-15 23:16:25,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779376716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:25,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261863756] [2023-12-15 23:16:25,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:25,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:25,565 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:25,577 INFO L93 Difference]: Finished difference Result 571 states and 868 transitions. [2023-12-15 23:16:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:25,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 23:16:25,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:25,579 INFO L225 Difference]: With dead ends: 571 [2023-12-15 23:16:25,579 INFO L226 Difference]: Without dead ends: 390 [2023-12-15 23:16:25,580 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 [2023-12-15 23:16:25,580 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:25,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 258 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-15 23:16:25,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2023-12-15 23:16:25,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.496124031007752) internal successors, (579), 387 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 579 transitions. [2023-12-15 23:16:25,588 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 579 transitions. Word has length 65 [2023-12-15 23:16:25,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:25,588 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 579 transitions. [2023-12-15 23:16:25,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 579 transitions. [2023-12-15 23:16:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:16:25,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:25,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:25,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:16:25,590 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:25,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1350628970, now seen corresponding path program 1 times [2023-12-15 23:16:25,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:25,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601694867] [2023-12-15 23:16:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:25,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601694867] [2023-12-15 23:16:25,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601694867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844047069] [2023-12-15 23:16:25,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:25,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:25,634 INFO L87 Difference]: Start difference. First operand 388 states and 579 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:25,652 INFO L93 Difference]: Finished difference Result 1044 states and 1593 transitions. [2023-12-15 23:16:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:25,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 23:16:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:25,655 INFO L225 Difference]: With dead ends: 1044 [2023-12-15 23:16:25,655 INFO L226 Difference]: Without dead ends: 700 [2023-12-15 23:16:25,655 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 [2023-12-15 23:16:25,656 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 65 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:25,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 260 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-15 23:16:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 698. [2023-12-15 23:16:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.5050215208034434) internal successors, (1049), 697 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1049 transitions. [2023-12-15 23:16:25,678 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1049 transitions. Word has length 65 [2023-12-15 23:16:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:25,678 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1049 transitions. [2023-12-15 23:16:25,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1049 transitions. [2023-12-15 23:16:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:16:25,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:25,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:25,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:16:25,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:25,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1936341098, now seen corresponding path program 1 times [2023-12-15 23:16:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:25,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391049644] [2023-12-15 23:16:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391049644] [2023-12-15 23:16:25,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391049644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203789411] [2023-12-15 23:16:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:25,717 INFO L87 Difference]: Start difference. First operand 698 states and 1049 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:25,743 INFO L93 Difference]: Finished difference Result 1942 states and 2947 transitions. [2023-12-15 23:16:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 23:16:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:25,747 INFO L225 Difference]: With dead ends: 1942 [2023-12-15 23:16:25,747 INFO L226 Difference]: Without dead ends: 1288 [2023-12-15 23:16:25,748 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 [2023-12-15 23:16:25,751 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 61 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:25,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 256 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-15 23:16:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-15 23:16:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 1.4980544747081712) internal successors, (1925), 1285 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1925 transitions. [2023-12-15 23:16:25,783 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1925 transitions. Word has length 65 [2023-12-15 23:16:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:25,783 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1925 transitions. [2023-12-15 23:16:25,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1925 transitions. [2023-12-15 23:16:25,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:16:25,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:25,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:25,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:16:25,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:25,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1047607658, now seen corresponding path program 1 times [2023-12-15 23:16:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858027451] [2023-12-15 23:16:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858027451] [2023-12-15 23:16:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858027451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696574132] [2023-12-15 23:16:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:25,827 INFO L87 Difference]: Start difference. First operand 1286 states and 1925 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:25,868 INFO L93 Difference]: Finished difference Result 3642 states and 5463 transitions. [2023-12-15 23:16:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:25,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 23:16:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:25,874 INFO L225 Difference]: With dead ends: 3642 [2023-12-15 23:16:25,874 INFO L226 Difference]: Without dead ends: 2400 [2023-12-15 23:16:25,876 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 [2023-12-15 23:16:25,876 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 59 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:25,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 258 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2023-12-15 23:16:25,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2398. [2023-12-15 23:16:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 1.4806007509386734) internal successors, (3549), 2397 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3549 transitions. [2023-12-15 23:16:25,948 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3549 transitions. Word has length 65 [2023-12-15 23:16:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:25,948 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 3549 transitions. [2023-12-15 23:16:25,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3549 transitions. [2023-12-15 23:16:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:16:25,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:25,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:25,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:16:25,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:25,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1310685034, now seen corresponding path program 1 times [2023-12-15 23:16:25,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:25,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527509704] [2023-12-15 23:16:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:25,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:25,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:25,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527509704] [2023-12-15 23:16:25,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527509704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:25,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:25,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862347377] [2023-12-15 23:16:25,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:25,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:25,985 INFO L87 Difference]: Start difference. First operand 2398 states and 3549 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:26,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:26,064 INFO L93 Difference]: Finished difference Result 6850 states and 10111 transitions. [2023-12-15 23:16:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:26,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-15 23:16:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:26,075 INFO L225 Difference]: With dead ends: 6850 [2023-12-15 23:16:26,076 INFO L226 Difference]: Without dead ends: 4496 [2023-12-15 23:16:26,080 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 [2023-12-15 23:16:26,080 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 63 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:26,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 262 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2023-12-15 23:16:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4494. [2023-12-15 23:16:26,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4493 states have (on average 1.4558201647006455) internal successors, (6541), 4493 states have internal predecessors, (6541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 6541 transitions. [2023-12-15 23:16:26,186 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 6541 transitions. Word has length 65 [2023-12-15 23:16:26,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:26,187 INFO L495 AbstractCegarLoop]: Abstraction has 4494 states and 6541 transitions. [2023-12-15 23:16:26,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:26,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 6541 transitions. [2023-12-15 23:16:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 23:16:26,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:26,187 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] [2023-12-15 23:16:26,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:16:26,188 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:26,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:26,188 INFO L85 PathProgramCache]: Analyzing trace with hash -893356005, now seen corresponding path program 1 times [2023-12-15 23:16:26,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:26,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387213118] [2023-12-15 23:16:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:26,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:26,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387213118] [2023-12-15 23:16:26,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387213118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:26,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:26,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:26,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610684631] [2023-12-15 23:16:26,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:26,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:26,228 INFO L87 Difference]: Start difference. First operand 4494 states and 6541 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:26,324 INFO L93 Difference]: Finished difference Result 9109 states and 13395 transitions. [2023-12-15 23:16:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:26,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-15 23:16:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:26,343 INFO L225 Difference]: With dead ends: 9109 [2023-12-15 23:16:26,343 INFO L226 Difference]: Without dead ends: 6610 [2023-12-15 23:16:26,347 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 [2023-12-15 23:16:26,348 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 66 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:26,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2023-12-15 23:16:26,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 6608. [2023-12-15 23:16:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6608 states, 6607 states have (on average 1.4504313606780688) internal successors, (9583), 6607 states have internal predecessors, (9583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6608 states to 6608 states and 9583 transitions. [2023-12-15 23:16:26,518 INFO L78 Accepts]: Start accepts. Automaton has 6608 states and 9583 transitions. Word has length 67 [2023-12-15 23:16:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:26,518 INFO L495 AbstractCegarLoop]: Abstraction has 6608 states and 9583 transitions. [2023-12-15 23:16:26,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 6608 states and 9583 transitions. [2023-12-15 23:16:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 23:16:26,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:26,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:26,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:16:26,520 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:26,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1835176170, now seen corresponding path program 1 times [2023-12-15 23:16:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324672870] [2023-12-15 23:16:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 23:16:26,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:26,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324672870] [2023-12-15 23:16:26,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324672870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:26,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:26,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498831882] [2023-12-15 23:16:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:26,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:26,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:26,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:26,634 INFO L87 Difference]: Start difference. First operand 6608 states and 9583 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:27,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:27,348 INFO L93 Difference]: Finished difference Result 47326 states and 68694 transitions. [2023-12-15 23:16:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:16:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 [2023-12-15 23:16:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:27,431 INFO L225 Difference]: With dead ends: 47326 [2023-12-15 23:16:27,431 INFO L226 Difference]: Without dead ends: 40764 [2023-12-15 23:16:27,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:16:27,445 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 910 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:27,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1027 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2023-12-15 23:16:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 13168. [2023-12-15 23:16:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13168 states, 13167 states have (on average 1.4447482342219184) internal successors, (19023), 13167 states have internal predecessors, (19023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13168 states to 13168 states and 19023 transitions. [2023-12-15 23:16:28,006 INFO L78 Accepts]: Start accepts. Automaton has 13168 states and 19023 transitions. Word has length 85 [2023-12-15 23:16:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:28,006 INFO L495 AbstractCegarLoop]: Abstraction has 13168 states and 19023 transitions. [2023-12-15 23:16:28,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 13168 states and 19023 transitions. [2023-12-15 23:16:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 23:16:28,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:28,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:28,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:16:28,009 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:28,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2103759338, now seen corresponding path program 1 times [2023-12-15 23:16:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:28,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969874224] [2023-12-15 23:16:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:16:28,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:28,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969874224] [2023-12-15 23:16:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969874224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:28,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:28,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:28,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777499271] [2023-12-15 23:16:28,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:28,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:28,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:28,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:28,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:28,122 INFO L87 Difference]: Start difference. First operand 13168 states and 19023 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:28,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:28,952 INFO L93 Difference]: Finished difference Result 53886 states and 78134 transitions. [2023-12-15 23:16:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:16:28,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 [2023-12-15 23:16:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:29,025 INFO L225 Difference]: With dead ends: 53886 [2023-12-15 23:16:29,026 INFO L226 Difference]: Without dead ends: 47324 [2023-12-15 23:16:29,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:16:29,041 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 950 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:29,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 950 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47324 states. [2023-12-15 23:16:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47324 to 23024. [2023-12-15 23:16:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23024 states, 23023 states have (on average 1.4378230465186987) internal successors, (33103), 23023 states have internal predecessors, (33103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23024 states to 23024 states and 33103 transitions. [2023-12-15 23:16:29,855 INFO L78 Accepts]: Start accepts. Automaton has 23024 states and 33103 transitions. Word has length 85 [2023-12-15 23:16:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:29,855 INFO L495 AbstractCegarLoop]: Abstraction has 23024 states and 33103 transitions. [2023-12-15 23:16:29,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 23024 states and 33103 transitions. [2023-12-15 23:16:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 23:16:29,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:29,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:29,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:16:29,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:29,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1605495830, now seen corresponding path program 1 times [2023-12-15 23:16:29,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681432869] [2023-12-15 23:16:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 23:16:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681432869] [2023-12-15 23:16:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681432869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:29,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:29,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:29,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184535140] [2023-12-15 23:16:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:29,997 INFO L87 Difference]: Start difference. First operand 23024 states and 33103 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:31,102 INFO L93 Difference]: Finished difference Result 60446 states and 87574 transitions. [2023-12-15 23:16:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:16:31,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-15 23:16:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:31,196 INFO L225 Difference]: With dead ends: 60446 [2023-12-15 23:16:31,197 INFO L226 Difference]: Without dead ends: 53884 [2023-12-15 23:16:31,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:16:31,212 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1021 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:31,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 961 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53884 states. [2023-12-15 23:16:32,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53884 to 29584. [2023-12-15 23:16:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29584 states, 29583 states have (on average 1.4380894432613325) internal successors, (42543), 29583 states have internal predecessors, (42543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29584 states to 29584 states and 42543 transitions. [2023-12-15 23:16:32,093 INFO L78 Accepts]: Start accepts. Automaton has 29584 states and 42543 transitions. Word has length 85 [2023-12-15 23:16:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:32,094 INFO L495 AbstractCegarLoop]: Abstraction has 29584 states and 42543 transitions. [2023-12-15 23:16:32,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 29584 states and 42543 transitions. [2023-12-15 23:16:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 23:16:32,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:32,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:32,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:16:32,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:32,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1800738026, now seen corresponding path program 1 times [2023-12-15 23:16:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:32,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749198891] [2023-12-15 23:16:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:32,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 23:16:32,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749198891] [2023-12-15 23:16:32,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749198891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:32,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:32,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245599422] [2023-12-15 23:16:32,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:32,244 INFO L87 Difference]: Start difference. First operand 29584 states and 42543 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:33,607 INFO L93 Difference]: Finished difference Result 67006 states and 97014 transitions. [2023-12-15 23:16:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:16:33,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-15 23:16:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:33,708 INFO L225 Difference]: With dead ends: 67006 [2023-12-15 23:16:33,709 INFO L226 Difference]: Without dead ends: 60444 [2023-12-15 23:16:33,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:16:33,720 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 936 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:33,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 985 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:33,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60444 states. [2023-12-15 23:16:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60444 to 36144. [2023-12-15 23:16:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36144 states, 36143 states have (on average 1.4382591373156628) internal successors, (51983), 36143 states have internal predecessors, (51983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36144 states to 36144 states and 51983 transitions. [2023-12-15 23:16:34,738 INFO L78 Accepts]: Start accepts. Automaton has 36144 states and 51983 transitions. Word has length 85 [2023-12-15 23:16:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:34,738 INFO L495 AbstractCegarLoop]: Abstraction has 36144 states and 51983 transitions. [2023-12-15 23:16:34,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 36144 states and 51983 transitions. [2023-12-15 23:16:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 23:16:34,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:34,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:34,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:16:34,741 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:34,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2063815402, now seen corresponding path program 1 times [2023-12-15 23:16:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658247386] [2023-12-15 23:16:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:16:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658247386] [2023-12-15 23:16:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658247386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:34,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86778605] [2023-12-15 23:16:34,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:34,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:34,869 INFO L87 Difference]: Start difference. First operand 36144 states and 51983 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:36,008 INFO L93 Difference]: Finished difference Result 73566 states and 106454 transitions. [2023-12-15 23:16:36,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:16:36,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-15 23:16:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:36,100 INFO L225 Difference]: With dead ends: 73566 [2023-12-15 23:16:36,101 INFO L226 Difference]: Without dead ends: 67004 [2023-12-15 23:16:36,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:16:36,119 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 848 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:36,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1107 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67004 states. [2023-12-15 23:16:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67004 to 42704. [2023-12-15 23:16:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42704 states, 42703 states have (on average 1.4383766948457954) internal successors, (61423), 42703 states have internal predecessors, (61423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42704 states to 42704 states and 61423 transitions. [2023-12-15 23:16:37,520 INFO L78 Accepts]: Start accepts. Automaton has 42704 states and 61423 transitions. Word has length 85 [2023-12-15 23:16:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:37,521 INFO L495 AbstractCegarLoop]: Abstraction has 42704 states and 61423 transitions. [2023-12-15 23:16:37,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 42704 states and 61423 transitions. [2023-12-15 23:16:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 23:16:37,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:37,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:16:37,525 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:37,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash 868781662, now seen corresponding path program 1 times [2023-12-15 23:16:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:37,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143849324] [2023-12-15 23:16:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143849324] [2023-12-15 23:16:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143849324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:37,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:37,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738391888] [2023-12-15 23:16:37,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:37,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:37,607 INFO L87 Difference]: Start difference. First operand 42704 states and 61423 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) [2023-12-15 23:16:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:38,258 INFO L93 Difference]: Finished difference Result 72681 states and 105127 transitions. [2023-12-15 23:16:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:38,260 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 [2023-12-15 23:16:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:38,303 INFO L225 Difference]: With dead ends: 72681 [2023-12-15 23:16:38,303 INFO L226 Difference]: Without dead ends: 30023 [2023-12-15 23:16:38,342 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 [2023-12-15 23:16:38,343 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 58 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 275 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30023 states. [2023-12-15 23:16:38,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30023 to 30021. [2023-12-15 23:16:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30021 states, 30020 states have (on average 1.4434377081945369) internal successors, (43332), 30020 states have internal predecessors, (43332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30021 states to 30021 states and 43332 transitions. [2023-12-15 23:16:39,022 INFO L78 Accepts]: Start accepts. Automaton has 30021 states and 43332 transitions. Word has length 87 [2023-12-15 23:16:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:39,023 INFO L495 AbstractCegarLoop]: Abstraction has 30021 states and 43332 transitions. [2023-12-15 23:16:39,023 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) [2023-12-15 23:16:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 30021 states and 43332 transitions. [2023-12-15 23:16:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 23:16:39,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:39,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:39,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:16:39,025 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:39,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1197833371, now seen corresponding path program 1 times [2023-12-15 23:16:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458367377] [2023-12-15 23:16:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:39,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:16:39,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:39,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458367377] [2023-12-15 23:16:39,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458367377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:39,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:39,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:16:39,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439443270] [2023-12-15 23:16:39,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:39,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:16:39,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:16:39,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:16:39,368 INFO L87 Difference]: Start difference. First operand 30021 states and 43332 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2023-12-15 23:16:40,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:40,418 INFO L93 Difference]: Finished difference Result 57683 states and 83659 transitions. [2023-12-15 23:16:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:16:40,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 87 [2023-12-15 23:16:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:40,484 INFO L225 Difference]: With dead ends: 57683 [2023-12-15 23:16:40,484 INFO L226 Difference]: Without dead ends: 53073 [2023-12-15 23:16:40,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:16:40,490 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 916 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:40,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1175 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:16:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53073 states. [2023-12-15 23:16:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53073 to 34629. [2023-12-15 23:16:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34629 states, 34628 states have (on average 1.4435716761002657) internal successors, (49988), 34628 states have internal predecessors, (49988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34629 states to 34629 states and 49988 transitions. [2023-12-15 23:16:41,347 INFO L78 Accepts]: Start accepts. Automaton has 34629 states and 49988 transitions. Word has length 87 [2023-12-15 23:16:41,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:41,347 INFO L495 AbstractCegarLoop]: Abstraction has 34629 states and 49988 transitions. [2023-12-15 23:16:41,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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) [2023-12-15 23:16:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 34629 states and 49988 transitions. [2023-12-15 23:16:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-15 23:16:41,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:41,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:41,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:16:41,350 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:41,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1191746063, now seen corresponding path program 1 times [2023-12-15 23:16:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497756053] [2023-12-15 23:16:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:41,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:41,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:41,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497756053] [2023-12-15 23:16:41,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497756053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:41,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:41,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157753341] [2023-12-15 23:16:41,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:41,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:41,410 INFO L87 Difference]: Start difference. First operand 34629 states and 49988 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) [2023-12-15 23:16:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:41,859 INFO L93 Difference]: Finished difference Result 51913 states and 74950 transitions. [2023-12-15 23:16:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:41,859 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 [2023-12-15 23:16:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:41,880 INFO L225 Difference]: With dead ends: 51913 [2023-12-15 23:16:41,880 INFO L226 Difference]: Without dead ends: 17351 [2023-12-15 23:16:41,900 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 [2023-12-15 23:16:41,901 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:41,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 260 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17351 states. [2023-12-15 23:16:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17351 to 17349. [2023-12-15 23:16:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17349 states, 17348 states have (on average 1.4288678810237492) internal successors, (24788), 17348 states have internal predecessors, (24788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17349 states to 17349 states and 24788 transitions. [2023-12-15 23:16:42,290 INFO L78 Accepts]: Start accepts. Automaton has 17349 states and 24788 transitions. Word has length 88 [2023-12-15 23:16:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:42,291 INFO L495 AbstractCegarLoop]: Abstraction has 17349 states and 24788 transitions. [2023-12-15 23:16:42,291 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) [2023-12-15 23:16:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 17349 states and 24788 transitions. [2023-12-15 23:16:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 23:16:42,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:42,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:42,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:16:42,293 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:42,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1897198243, now seen corresponding path program 1 times [2023-12-15 23:16:42,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:42,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077825304] [2023-12-15 23:16:42,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:42,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:42,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:42,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077825304] [2023-12-15 23:16:42,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077825304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:42,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:42,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:42,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831293267] [2023-12-15 23:16:42,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:42,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:42,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:42,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:42,350 INFO L87 Difference]: Start difference. First operand 17349 states and 24788 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) [2023-12-15 23:16:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:42,515 INFO L93 Difference]: Finished difference Result 25993 states and 37150 transitions. [2023-12-15 23:16:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:42,516 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 [2023-12-15 23:16:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:42,525 INFO L225 Difference]: With dead ends: 25993 [2023-12-15 23:16:42,525 INFO L226 Difference]: Without dead ends: 8711 [2023-12-15 23:16:42,534 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 [2023-12-15 23:16:42,535 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 50 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:42,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 245 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2023-12-15 23:16:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 8709. [2023-12-15 23:16:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8709 states, 8708 states have (on average 1.4134129536058797) internal successors, (12308), 8708 states have internal predecessors, (12308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 12308 transitions. [2023-12-15 23:16:42,987 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 12308 transitions. Word has length 90 [2023-12-15 23:16:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:42,988 INFO L495 AbstractCegarLoop]: Abstraction has 8709 states and 12308 transitions. [2023-12-15 23:16:42,988 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) [2023-12-15 23:16:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 12308 transitions. [2023-12-15 23:16:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 23:16:42,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:42,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:42,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:16:42,989 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:42,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1756777003, now seen corresponding path program 1 times [2023-12-15 23:16:42,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:42,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113697510] [2023-12-15 23:16:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:43,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:43,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113697510] [2023-12-15 23:16:43,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113697510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:43,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:43,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141663459] [2023-12-15 23:16:43,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:43,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:43,051 INFO L87 Difference]: Start difference. First operand 8709 states and 12308 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2023-12-15 23:16:43,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:43,157 INFO L93 Difference]: Finished difference Result 13033 states and 18430 transitions. [2023-12-15 23:16:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:43,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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 [2023-12-15 23:16:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:43,161 INFO L225 Difference]: With dead ends: 13033 [2023-12-15 23:16:43,161 INFO L226 Difference]: Without dead ends: 4391 [2023-12-15 23:16:43,166 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 [2023-12-15 23:16:43,167 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 47 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:43,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 230 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2023-12-15 23:16:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 4389. [2023-12-15 23:16:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4389 states, 4388 states have (on average 1.3965360072926163) internal successors, (6128), 4388 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 6128 transitions. [2023-12-15 23:16:43,287 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 6128 transitions. Word has length 92 [2023-12-15 23:16:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:43,287 INFO L495 AbstractCegarLoop]: Abstraction has 4389 states and 6128 transitions. [2023-12-15 23:16:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2023-12-15 23:16:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 6128 transitions. [2023-12-15 23:16:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 23:16:43,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:43,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:43,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:16:43,288 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:43,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash 707997817, now seen corresponding path program 1 times [2023-12-15 23:16:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:43,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872781154] [2023-12-15 23:16:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:43,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:43,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:43,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872781154] [2023-12-15 23:16:43,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872781154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:43,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:43,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:43,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93502771] [2023-12-15 23:16:43,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:43,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:43,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:43,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:43,370 INFO L87 Difference]: Start difference. First operand 4389 states and 6128 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) [2023-12-15 23:16:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:43,428 INFO L93 Difference]: Finished difference Result 6553 states and 9160 transitions. [2023-12-15 23:16:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:43,429 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 [2023-12-15 23:16:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:43,431 INFO L225 Difference]: With dead ends: 6553 [2023-12-15 23:16:43,431 INFO L226 Difference]: Without dead ends: 2231 [2023-12-15 23:16:43,433 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 [2023-12-15 23:16:43,434 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 44 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:43,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 215 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2023-12-15 23:16:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2229. [2023-12-15 23:16:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2228 states have (on average 1.377019748653501) internal successors, (3068), 2228 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3068 transitions. [2023-12-15 23:16:43,495 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3068 transitions. Word has length 94 [2023-12-15 23:16:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:43,495 INFO L495 AbstractCegarLoop]: Abstraction has 2229 states and 3068 transitions. [2023-12-15 23:16:43,496 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) [2023-12-15 23:16:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3068 transitions. [2023-12-15 23:16:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-15 23:16:43,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:43,496 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] [2023-12-15 23:16:43,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:16:43,497 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:43,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1899847609, now seen corresponding path program 1 times [2023-12-15 23:16:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:43,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742405029] [2023-12-15 23:16:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:43,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742405029] [2023-12-15 23:16:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742405029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:16:43,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:16:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:16:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517508941] [2023-12-15 23:16:43,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:16:43,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:16:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:16:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:16:43,577 INFO L87 Difference]: Start difference. First operand 2229 states and 3068 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:43,609 INFO L93 Difference]: Finished difference Result 3313 states and 4570 transitions. [2023-12-15 23:16:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:16:43,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-15 23:16:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:43,610 INFO L225 Difference]: With dead ends: 3313 [2023-12-15 23:16:43,610 INFO L226 Difference]: Without dead ends: 1151 [2023-12-15 23:16:43,611 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 [2023-12-15 23:16:43,612 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 41 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:43,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 200 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:16:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-12-15 23:16:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1149. [2023-12-15 23:16:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.352787456445993) internal successors, (1553), 1148 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1553 transitions. [2023-12-15 23:16:43,641 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1553 transitions. Word has length 96 [2023-12-15 23:16:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:43,642 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1553 transitions. [2023-12-15 23:16:43,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1553 transitions. [2023-12-15 23:16:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-15 23:16:43,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:43,642 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] [2023-12-15 23:16:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:16:43,643 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:43,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2057471595, now seen corresponding path program 1 times [2023-12-15 23:16:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:43,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535364326] [2023-12-15 23:16:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:43,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:44,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535364326] [2023-12-15 23:16:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535364326] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:16:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201862904] [2023-12-15 23:16:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:44,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:16:44,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:16:44,551 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) [2023-12-15 23:16:44,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:16:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:44,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 23:16:44,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:16:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:16:44,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:16:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:16:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201862904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:16:44,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:16:44,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-15 23:16:44,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443902139] [2023-12-15 23:16:44,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:16:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 23:16:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 23:16:44,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-15 23:16:44,955 INFO L87 Difference]: Start difference. First operand 1149 states and 1553 transitions. Second operand has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:49,034 INFO L93 Difference]: Finished difference Result 10084 states and 13599 transitions. [2023-12-15 23:16:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-15 23:16:49,035 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-15 23:16:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:49,044 INFO L225 Difference]: With dead ends: 10084 [2023-12-15 23:16:49,044 INFO L226 Difference]: Without dead ends: 9002 [2023-12-15 23:16:49,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=862, Invalid=3968, Unknown=0, NotChecked=0, Total=4830 [2023-12-15 23:16:49,048 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 3042 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:49,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 705 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:16:49,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9002 states. [2023-12-15 23:16:49,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9002 to 8554. [2023-12-15 23:16:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8554 states, 8553 states have (on average 1.3129895942943997) internal successors, (11230), 8553 states have internal predecessors, (11230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 11230 transitions. [2023-12-15 23:16:49,292 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 11230 transitions. Word has length 98 [2023-12-15 23:16:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:49,292 INFO L495 AbstractCegarLoop]: Abstraction has 8554 states and 11230 transitions. [2023-12-15 23:16:49,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 11230 transitions. [2023-12-15 23:16:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-15 23:16:49,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:49,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:49,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 23:16:49,496 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,SelfDestructingSolverStorable24 [2023-12-15 23:16:49,496 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:49,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1180841429, now seen corresponding path program 1 times [2023-12-15 23:16:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354864449] [2023-12-15 23:16:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:50,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354864449] [2023-12-15 23:16:50,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354864449] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:16:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415360966] [2023-12-15 23:16:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:50,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:16:50,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:16:50,151 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) [2023-12-15 23:16:50,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:16:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:50,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 23:16:50,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:16:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:50,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:16:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415360966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:16:51,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:16:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-15 23:16:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723100638] [2023-12-15 23:16:51,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:16:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-15 23:16:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-15 23:16:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2023-12-15 23:16:51,615 INFO L87 Difference]: Start difference. First operand 8554 states and 11230 transitions. Second operand has 32 states, 32 states have (on average 8.34375) internal successors, (267), 31 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:54,595 INFO L93 Difference]: Finished difference Result 29764 states and 38946 transitions. [2023-12-15 23:16:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-15 23:16:54,595 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 31 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-15 23:16:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:54,615 INFO L225 Difference]: With dead ends: 29764 [2023-12-15 23:16:54,615 INFO L226 Difference]: Without dead ends: 21533 [2023-12-15 23:16:54,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1033, Invalid=5287, Unknown=0, NotChecked=0, Total=6320 [2023-12-15 23:16:54,624 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 2446 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:54,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2446 Valid, 1692 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:16:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21533 states. [2023-12-15 23:16:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21533 to 17053. [2023-12-15 23:16:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17053 states, 17052 states have (on average 1.300258034248182) internal successors, (22172), 17052 states have internal predecessors, (22172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17053 states to 17053 states and 22172 transitions. [2023-12-15 23:16:55,110 INFO L78 Accepts]: Start accepts. Automaton has 17053 states and 22172 transitions. Word has length 99 [2023-12-15 23:16:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:55,110 INFO L495 AbstractCegarLoop]: Abstraction has 17053 states and 22172 transitions. [2023-12-15 23:16:55,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 31 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 17053 states and 22172 transitions. [2023-12-15 23:16:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-15 23:16:55,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:55,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:55,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:16:55,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 23:16:55,324 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:55,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:55,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1348808747, now seen corresponding path program 1 times [2023-12-15 23:16:55,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:55,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088761432] [2023-12-15 23:16:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:55,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:55,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:16:55,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088761432] [2023-12-15 23:16:55,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088761432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:16:55,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299772840] [2023-12-15 23:16:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:55,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:16:55,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:16:55,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:16:55,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:16:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:16:55,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:16:55,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:16:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:55,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:16:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:16:56,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299772840] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:16:56,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:16:56,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-15 23:16:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107402575] [2023-12-15 23:16:56,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:16:56,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 23:16:56,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:16:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 23:16:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-12-15 23:16:56,620 INFO L87 Difference]: Start difference. First operand 17053 states and 22172 transitions. Second operand has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:16:58,404 INFO L93 Difference]: Finished difference Result 53901 states and 69934 transitions. [2023-12-15 23:16:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-15 23:16:58,405 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-15 23:16:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:16:58,452 INFO L225 Difference]: With dead ends: 53901 [2023-12-15 23:16:58,453 INFO L226 Difference]: Without dead ends: 37119 [2023-12-15 23:16:58,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=569, Invalid=2293, Unknown=0, NotChecked=0, Total=2862 [2023-12-15 23:16:58,474 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 2353 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:16:58,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 1019 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:16:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37119 states. [2023-12-15 23:16:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37119 to 29029. [2023-12-15 23:16:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29029 states, 29028 states have (on average 1.2607482430756511) internal successors, (36597), 29028 states have internal predecessors, (36597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29029 states to 29029 states and 36597 transitions. [2023-12-15 23:16:59,479 INFO L78 Accepts]: Start accepts. Automaton has 29029 states and 36597 transitions. Word has length 99 [2023-12-15 23:16:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:16:59,479 INFO L495 AbstractCegarLoop]: Abstraction has 29029 states and 36597 transitions. [2023-12-15 23:16:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.043478260869565) internal successors, (277), 22 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:16:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 29029 states and 36597 transitions. [2023-12-15 23:16:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 23:16:59,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:16:59,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:16:59,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:16:59,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:16:59,688 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:16:59,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:16:59,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1657075545, now seen corresponding path program 1 times [2023-12-15 23:16:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:16:59,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262188487] [2023-12-15 23:16:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:16:59,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:16:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:00,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:17:00,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262188487] [2023-12-15 23:17:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262188487] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:17:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843847875] [2023-12-15 23:17:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:17:00,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:17:00,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:17:00,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:17:00,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 23:17:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:17:00,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 23:17:00,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:17:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:01,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:17:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:17:03,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843847875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:17:03,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:17:03,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 37 [2023-12-15 23:17:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510138520] [2023-12-15 23:17:03,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:17:03,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-15 23:17:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:17:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-15 23:17:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1235, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 23:17:03,870 INFO L87 Difference]: Start difference. First operand 29029 states and 36597 transitions. Second operand has 38 states, 38 states have (on average 7.2631578947368425) internal successors, (276), 37 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:17:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-15 23:17:18,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6773 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=3682, Invalid=17198, Unknown=0, NotChecked=0, Total=20880 [2023-12-15 23:17:18,269 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 2737 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:17:18,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2737 Valid, 1538 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 23:17:18,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:17:18,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 23:17:18,281 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:17:18,281 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:17:18,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-15 23:17:18,471 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (29029states) and FLOYD_HOARE automaton (currently 109 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 145 known predicates. [2023-12-15 23:17:18,475 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:17:18,477 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:17:18,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:17:18 BoogieIcfgContainer [2023-12-15 23:17:18,479 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:17:18,480 INFO L158 Benchmark]: Toolchain (without parser) took 55827.03ms. Allocated memory was 308.3MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 257.8MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 23:17:18,480 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 185.6MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:17:18,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.72ms. Allocated memory is still 308.3MB. Free memory was 257.6MB in the beginning and 241.1MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 23:17:18,480 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.82ms. Allocated memory is still 308.3MB. Free memory was 241.1MB in the beginning and 238.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:17:18,480 INFO L158 Benchmark]: Boogie Preprocessor took 33.32ms. Allocated memory is still 308.3MB. Free memory was 238.0MB in the beginning and 234.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:17:18,481 INFO L158 Benchmark]: RCFGBuilder took 567.27ms. Allocated memory is still 308.3MB. Free memory was 234.9MB in the beginning and 263.6MB in the end (delta: -28.7MB). Peak memory consumption was 25.4MB. Max. memory is 8.0GB. [2023-12-15 23:17:18,481 INFO L158 Benchmark]: TraceAbstraction took 54919.67ms. Allocated memory was 308.3MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 263.1MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 23:17:18,482 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 185.6MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 271.72ms. Allocated memory is still 308.3MB. Free memory was 257.6MB in the beginning and 241.1MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.82ms. Allocated memory is still 308.3MB. Free memory was 241.1MB in the beginning and 238.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.32ms. Allocated memory is still 308.3MB. Free memory was 238.0MB in the beginning and 234.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 567.27ms. Allocated memory is still 308.3MB. Free memory was 234.9MB in the beginning and 263.6MB in the end (delta: -28.7MB). Peak memory consumption was 25.4MB. Max. memory is 8.0GB. * TraceAbstraction took 54919.67ms. Allocated memory was 308.3MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 263.1MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 504]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 504). Cancelled while NwaCegarLoop was constructing difference of abstraction (29029states) and FLOYD_HOARE automaton (currently 109 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 145 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.9s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18398 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18398 mSDsluCounter, 17604 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13380 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6862 IncrementalHoareTripleChecker+Invalid, 7117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 4224 mSDtfsCounter, 6862 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1222 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10621 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42704occurred in iteration=17, InterpolantAutomatonStates: 258, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 156782 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 2538 NumberOfCodeBlocks, 2538 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2898 ConstructedInterpolants, 0 QuantifiedInterpolants, 28008 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1609 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 36 InterpolantComputations, 24 PerfectInterpolantSequences, 290/402 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown