/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/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:38:29,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:38:29,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 23:38:29,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:38:29,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:38:29,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:38:29,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:38:29,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:38:29,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:38:29,424 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:38:29,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:38:29,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:38:29,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:38:29,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:38:29,427 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:38:29,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:38:29,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:38:29,427 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:38:29,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:38:29,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:38:29,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:38:29,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:38:29,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:38:29,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:38:29,429 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:38:29,429 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:38:29,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:38:29,430 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:38:29,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:38:29,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:38:29,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:38:29,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:38:29,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:38:29,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:38:29,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:38:29,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:38:29,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:38:29,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:38:29,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:38:29,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:38:29,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:38:29,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:38:29,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:38:29,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:38:29,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:38:29,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:38:29,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:38:29,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:38:29,662 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:38:29,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-18 23:38:30,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:38:31,147 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:38:31,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-18 23:38:31,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49767cae2/9144e9743404418b93abf6c450113f5f/FLAG55f9f18e9 [2023-12-18 23:38:31,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49767cae2/9144e9743404418b93abf6c450113f5f [2023-12-18 23:38:31,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:38:31,187 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:38:31,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:38:31,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:38:31,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:38:31,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:38:31" (1/1) ... [2023-12-18 23:38:31,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464c3d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:31, skipping insertion in model container [2023-12-18 23:38:31,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:38:31" (1/1) ... [2023-12-18 23:38:31,284 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:38:31,505 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[8749,8762] [2023-12-18 23:38:31,543 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[16039,16052] [2023-12-18 23:38:31,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:38:31,994 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:38:32,011 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[8749,8762] [2023-12-18 23:38:32,017 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c[16039,16052] [2023-12-18 23:38:32,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:38:32,337 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:38:32,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32 WrapperNode [2023-12-18 23:38:32,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:38:32,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:38:32,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:38:32,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:38:32,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,643 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5036 [2023-12-18 23:38:32,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:38:32,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:38:32,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:38:32,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:38:32,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,816 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]. [2023-12-18 23:38:32,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:32,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:33,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:33,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:38:33,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:38:33,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:38:33,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:38:33,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (1/1) ... [2023-12-18 23:38:33,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:38:33,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:38:33,081 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) [2023-12-18 23:38:33,098 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 [2023-12-18 23:38:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:38:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:38:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:38:33,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:38:33,198 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:38:33,199 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:38:36,197 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:38:36,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:38:36,232 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:38:36,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:38:36 BoogieIcfgContainer [2023-12-18 23:38:36,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:38:36,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:38:36,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:38:36,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:38:36,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:38:31" (1/3) ... [2023-12-18 23:38:36,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6987a485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:38:36, skipping insertion in model container [2023-12-18 23:38:36,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:38:32" (2/3) ... [2023-12-18 23:38:36,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6987a485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:38:36, skipping insertion in model container [2023-12-18 23:38:36,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:38:36" (3/3) ... [2023-12-18 23:38:36,253 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-18 23:38:36,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:38:36,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:38:36,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:38:36,303 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;@3a2fcb9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:38:36,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:38:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 23:38:36,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:36,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:38:36,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:36,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:36,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1324896968, now seen corresponding path program 1 times [2023-12-18 23:38:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:36,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368531381] [2023-12-18 23:38:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368531381] [2023-12-18 23:38:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368531381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:36,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:36,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:38:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527970174] [2023-12-18 23:38:36,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:36,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 23:38:36,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 23:38:36,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:38:36,466 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:36,545 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-12-18 23:38:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 23:38:36,549 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-18 23:38:36,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:36,564 INFO L225 Difference]: With dead ends: 1616 [2023-12-18 23:38:36,565 INFO L226 Difference]: Without dead ends: 818 [2023-12-18 23:38:36,570 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 [2023-12-18 23:38:36,573 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:36,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-18 23:38:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-18 23:38:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-12-18 23:38:36,648 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-12-18 23:38:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:36,648 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-12-18 23:38:36,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:36,649 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-12-18 23:38:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 23:38:36,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:36,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:38:36,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:38:36,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:36,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2023-12-18 23:38:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986783794] [2023-12-18 23:38:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:36,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986783794] [2023-12-18 23:38:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986783794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:36,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:36,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:38:36,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033964915] [2023-12-18 23:38:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:36,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:38:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:38:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:38:36,830 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:36,884 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2023-12-18 23:38:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:38:36,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-18 23:38:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:36,887 INFO L225 Difference]: With dead ends: 858 [2023-12-18 23:38:36,887 INFO L226 Difference]: Without dead ends: 818 [2023-12-18 23:38:36,888 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 [2023-12-18 23:38:36,888 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:36,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-18 23:38:36,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-18 23:38:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2023-12-18 23:38:36,901 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2023-12-18 23:38:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:36,901 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2023-12-18 23:38:36,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2023-12-18 23:38:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-18 23:38:36,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:36,906 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] [2023-12-18 23:38:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:38:36,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:36,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2023-12-18 23:38:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:36,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028979346] [2023-12-18 23:38:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:37,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:37,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028979346] [2023-12-18 23:38:37,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028979346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:37,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:38:37,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765735836] [2023-12-18 23:38:37,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:37,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:38:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:38:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:38:37,044 INFO L87 Difference]: Start difference. First operand 818 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:37,207 INFO L93 Difference]: Finished difference Result 1114 states and 1997 transitions. [2023-12-18 23:38:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-18 23:38:37,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-18 23:38:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:37,211 INFO L225 Difference]: With dead ends: 1114 [2023-12-18 23:38:37,211 INFO L226 Difference]: Without dead ends: 1077 [2023-12-18 23:38:37,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-18 23:38:37,213 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:37,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:38:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-12-18 23:38:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 853. [2023-12-18 23:38:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8578143360752057) internal successors, (1581), 852 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1581 transitions. [2023-12-18 23:38:37,227 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1581 transitions. Word has length 41 [2023-12-18 23:38:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:37,227 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1581 transitions. [2023-12-18 23:38:37,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1581 transitions. [2023-12-18 23:38:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:38:37,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:37,229 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] [2023-12-18 23:38:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:38:37,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:37,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2023-12-18 23:38:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:37,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765436861] [2023-12-18 23:38:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:37,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:37,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765436861] [2023-12-18 23:38:37,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765436861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:37,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:37,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:37,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339325763] [2023-12-18 23:38:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:37,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:37,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:37,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:37,295 INFO L87 Difference]: Start difference. First operand 853 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:37,325 INFO L93 Difference]: Finished difference Result 986 states and 1792 transitions. [2023-12-18 23:38:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:37,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-18 23:38:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:37,368 INFO L225 Difference]: With dead ends: 986 [2023-12-18 23:38:37,368 INFO L226 Difference]: Without dead ends: 914 [2023-12-18 23:38:37,368 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 [2023-12-18 23:38:37,369 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:37,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-12-18 23:38:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 910. [2023-12-18 23:38:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8381057268722467) internal successors, (1669), 909 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1669 transitions. [2023-12-18 23:38:37,383 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1669 transitions. Word has length 43 [2023-12-18 23:38:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:37,384 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1669 transitions. [2023-12-18 23:38:37,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1669 transitions. [2023-12-18 23:38:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-18 23:38:37,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:37,386 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] [2023-12-18 23:38:37,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:38:37,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:37,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:37,387 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2023-12-18 23:38:37,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:37,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938920969] [2023-12-18 23:38:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:37,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938920969] [2023-12-18 23:38:37,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938920969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:37,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:37,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:38:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003994805] [2023-12-18 23:38:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:37,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:38:37,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:38:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:38:37,559 INFO L87 Difference]: Start difference. First operand 910 states and 1669 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:37,671 INFO L93 Difference]: Finished difference Result 1041 states and 1873 transitions. [2023-12-18 23:38:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:38:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-18 23:38:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:37,687 INFO L225 Difference]: With dead ends: 1041 [2023-12-18 23:38:37,687 INFO L226 Difference]: Without dead ends: 912 [2023-12-18 23:38:37,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-18 23:38:37,688 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 2970 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:37,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 1684 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-12-18 23:38:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2023-12-18 23:38:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2023-12-18 23:38:37,700 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 43 [2023-12-18 23:38:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:37,700 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2023-12-18 23:38:37,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2023-12-18 23:38:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-18 23:38:37,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:37,701 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] [2023-12-18 23:38:37,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:38:37,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:37,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2023-12-18 23:38:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919049259] [2023-12-18 23:38:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:37,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:37,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:37,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919049259] [2023-12-18 23:38:37,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919049259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:37,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:37,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:38:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121757066] [2023-12-18 23:38:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:37,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:38:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:38:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:38:37,813 INFO L87 Difference]: Start difference. First operand 910 states and 1667 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:37,840 INFO L93 Difference]: Finished difference Result 918 states and 1676 transitions. [2023-12-18 23:38:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:38:37,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-18 23:38:37,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:37,843 INFO L225 Difference]: With dead ends: 918 [2023-12-18 23:38:37,843 INFO L226 Difference]: Without dead ends: 916 [2023-12-18 23:38:37,844 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 [2023-12-18 23:38:37,846 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 [2023-12-18 23:38:37,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-18 23:38:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2023-12-18 23:38:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.831140350877193) internal successors, (1670), 913 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1670 transitions. [2023-12-18 23:38:37,864 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1670 transitions. Word has length 44 [2023-12-18 23:38:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:37,864 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1670 transitions. [2023-12-18 23:38:37,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1670 transitions. [2023-12-18 23:38:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:38:37,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:37,865 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] [2023-12-18 23:38:37,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:38:37,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:37,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2023-12-18 23:38:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081208608] [2023-12-18 23:38:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081208608] [2023-12-18 23:38:37,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081208608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:37,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:37,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:37,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892747964] [2023-12-18 23:38:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:37,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:37,917 INFO L87 Difference]: Start difference. First operand 914 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:37,937 INFO L93 Difference]: Finished difference Result 1164 states and 2050 transitions. [2023-12-18 23:38:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:37,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-18 23:38:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:37,940 INFO L225 Difference]: With dead ends: 1164 [2023-12-18 23:38:37,940 INFO L226 Difference]: Without dead ends: 1031 [2023-12-18 23:38:37,941 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 [2023-12-18 23:38:37,943 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:37,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:37,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-18 23:38:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1029. [2023-12-18 23:38:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1027 states have (on average 1.7925998052580332) internal successors, (1841), 1028 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1841 transitions. [2023-12-18 23:38:37,956 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1841 transitions. Word has length 45 [2023-12-18 23:38:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:37,958 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1841 transitions. [2023-12-18 23:38:37,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1841 transitions. [2023-12-18 23:38:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:38:37,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:37,959 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] [2023-12-18 23:38:37,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:38:37,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:37,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2023-12-18 23:38:37,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:37,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897005494] [2023-12-18 23:38:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:37,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:38,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897005494] [2023-12-18 23:38:38,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897005494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:38,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:38,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:38,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775099662] [2023-12-18 23:38:38,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:38,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:38,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:38,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:38,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:38,005 INFO L87 Difference]: Start difference. First operand 1029 states and 1841 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:38,031 INFO L93 Difference]: Finished difference Result 1493 states and 2535 transitions. [2023-12-18 23:38:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:38,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-18 23:38:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:38,035 INFO L225 Difference]: With dead ends: 1493 [2023-12-18 23:38:38,035 INFO L226 Difference]: Without dead ends: 1245 [2023-12-18 23:38:38,036 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 [2023-12-18 23:38:38,036 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:38,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-18 23:38:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1243. [2023-12-18 23:38:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1241 states have (on average 1.7332796132151491) internal successors, (2151), 1242 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 2151 transitions. [2023-12-18 23:38:38,056 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 2151 transitions. Word has length 45 [2023-12-18 23:38:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:38,057 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 2151 transitions. [2023-12-18 23:38:38,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 2151 transitions. [2023-12-18 23:38:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-18 23:38:38,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:38,057 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] [2023-12-18 23:38:38,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:38:38,058 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:38,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2023-12-18 23:38:38,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:38,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136636542] [2023-12-18 23:38:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:38,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136636542] [2023-12-18 23:38:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136636542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512102783] [2023-12-18 23:38:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:38,083 INFO L87 Difference]: Start difference. First operand 1243 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:38,109 INFO L93 Difference]: Finished difference Result 2103 states and 3409 transitions. [2023-12-18 23:38:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-18 23:38:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:38,114 INFO L225 Difference]: With dead ends: 2103 [2023-12-18 23:38:38,114 INFO L226 Difference]: Without dead ends: 1641 [2023-12-18 23:38:38,114 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 [2023-12-18 23:38:38,115 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:38,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-18 23:38:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1639. [2023-12-18 23:38:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1637 states have (on average 1.653634697617593) internal successors, (2707), 1638 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2707 transitions. [2023-12-18 23:38:38,139 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2707 transitions. Word has length 45 [2023-12-18 23:38:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:38,139 INFO L495 AbstractCegarLoop]: Abstraction has 1639 states and 2707 transitions. [2023-12-18 23:38:38,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2707 transitions. [2023-12-18 23:38:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-18 23:38:38,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:38,140 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] [2023-12-18 23:38:38,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:38:38,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:38,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2023-12-18 23:38:38,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:38,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662622752] [2023-12-18 23:38:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:38,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:38,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:38,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662622752] [2023-12-18 23:38:38,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662622752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:38,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:38,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:38,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710819357] [2023-12-18 23:38:38,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:38,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:38,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:38,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:38,167 INFO L87 Difference]: Start difference. First operand 1639 states and 2707 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:38,196 INFO L93 Difference]: Finished difference Result 2542 states and 4041 transitions. [2023-12-18 23:38:38,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:38,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-18 23:38:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:38,201 INFO L225 Difference]: With dead ends: 2542 [2023-12-18 23:38:38,201 INFO L226 Difference]: Without dead ends: 2043 [2023-12-18 23:38:38,202 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 [2023-12-18 23:38:38,203 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:38,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2023-12-18 23:38:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2041. [2023-12-18 23:38:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2039 states have (on average 1.6071603727317312) internal successors, (3277), 2040 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 3277 transitions. [2023-12-18 23:38:38,241 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 3277 transitions. Word has length 47 [2023-12-18 23:38:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:38,242 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 3277 transitions. [2023-12-18 23:38:38,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 3277 transitions. [2023-12-18 23:38:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:38:38,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:38,243 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] [2023-12-18 23:38:38,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:38:38,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:38,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2023-12-18 23:38:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:38,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308936698] [2023-12-18 23:38:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:38:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:38,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308936698] [2023-12-18 23:38:38,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308936698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:38,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:38,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:38:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732329182] [2023-12-18 23:38:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:38:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:38:38,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:38:38,321 INFO L87 Difference]: Start difference. First operand 2041 states and 3277 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:38,515 INFO L93 Difference]: Finished difference Result 7347 states and 10890 transitions. [2023-12-18 23:38:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:38:38,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 [2023-12-18 23:38:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:38,530 INFO L225 Difference]: With dead ends: 7347 [2023-12-18 23:38:38,530 INFO L226 Difference]: Without dead ends: 6089 [2023-12-18 23:38:38,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:38:38,532 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4653 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:38,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 3347 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:38:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2023-12-18 23:38:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 3297. [2023-12-18 23:38:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 3295 states have (on average 1.5359635811836114) internal successors, (5061), 3296 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 5061 transitions. [2023-12-18 23:38:38,601 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 5061 transitions. Word has length 61 [2023-12-18 23:38:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:38,602 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 5061 transitions. [2023-12-18 23:38:38,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 5061 transitions. [2023-12-18 23:38:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:38:38,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:38,603 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] [2023-12-18 23:38:38,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:38:38,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:38,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2023-12-18 23:38:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591203533] [2023-12-18 23:38:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:38,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:38:38,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:38,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591203533] [2023-12-18 23:38:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591203533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:38,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:38:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659067522] [2023-12-18 23:38:38,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:38,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:38:38,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:38:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:38:38,669 INFO L87 Difference]: Start difference. First operand 3297 states and 5061 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:38,840 INFO L93 Difference]: Finished difference Result 8603 states and 12674 transitions. [2023-12-18 23:38:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:38:38,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2023-12-18 23:38:38,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:38,871 INFO L225 Difference]: With dead ends: 8603 [2023-12-18 23:38:38,871 INFO L226 Difference]: Without dead ends: 7345 [2023-12-18 23:38:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:38:38,875 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4681 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3284 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:38:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2023-12-18 23:38:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 5185. [2023-12-18 23:38:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5183 states have (on average 1.4889060389735673) internal successors, (7717), 5184 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 7717 transitions. [2023-12-18 23:38:38,990 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 7717 transitions. Word has length 61 [2023-12-18 23:38:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:38,990 INFO L495 AbstractCegarLoop]: Abstraction has 5185 states and 7717 transitions. [2023-12-18 23:38:38,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 7717 transitions. [2023-12-18 23:38:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 23:38:38,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:38,991 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] [2023-12-18 23:38:38,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:38:38,991 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:38,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:38,992 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2023-12-18 23:38:38,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:38,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760825462] [2023-12-18 23:38:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:38,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-18 23:38:39,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:39,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760825462] [2023-12-18 23:38:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760825462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:39,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:39,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:38:39,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057680158] [2023-12-18 23:38:39,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:39,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:38:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:38:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:38:39,061 INFO L87 Difference]: Start difference. First operand 5185 states and 7717 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:39,244 INFO L93 Difference]: Finished difference Result 9859 states and 14458 transitions. [2023-12-18 23:38:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:38:39,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2023-12-18 23:38:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:39,257 INFO L225 Difference]: With dead ends: 9859 [2023-12-18 23:38:39,257 INFO L226 Difference]: Without dead ends: 8601 [2023-12-18 23:38:39,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:38:39,261 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4667 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:39,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3303 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8601 states. [2023-12-18 23:38:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8601 to 6441. [2023-12-18 23:38:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6439 states have (on average 1.4755396800745457) internal successors, (9501), 6440 states have internal predecessors, (9501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 9501 transitions. [2023-12-18 23:38:39,471 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 9501 transitions. Word has length 61 [2023-12-18 23:38:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:39,472 INFO L495 AbstractCegarLoop]: Abstraction has 6441 states and 9501 transitions. [2023-12-18 23:38:39,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 9501 transitions. [2023-12-18 23:38:39,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-18 23:38:39,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:39,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:38:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:38:39,473 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:39,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -687792901, now seen corresponding path program 1 times [2023-12-18 23:38:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:39,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126714393] [2023-12-18 23:38:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:39,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:39,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126714393] [2023-12-18 23:38:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126714393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:39,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100611958] [2023-12-18 23:38:39,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:39,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:38:39,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:39,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:38:39,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:38:39,569 INFO L87 Difference]: Start difference. First operand 6441 states and 9501 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:44,800 INFO L93 Difference]: Finished difference Result 8696 states and 13810 transitions. [2023-12-18 23:38:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:38:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-18 23:38:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:44,810 INFO L225 Difference]: With dead ends: 8696 [2023-12-18 23:38:44,810 INFO L226 Difference]: Without dead ends: 7943 [2023-12-18 23:38:44,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:38:44,811 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 2360 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:44,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 776 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-18 23:38:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2023-12-18 23:38:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 7943. [2023-12-18 23:38:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7943 states, 7941 states have (on average 1.4626621332325904) internal successors, (11615), 7942 states have internal predecessors, (11615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7943 states to 7943 states and 11615 transitions. [2023-12-18 23:38:44,965 INFO L78 Accepts]: Start accepts. Automaton has 7943 states and 11615 transitions. Word has length 62 [2023-12-18 23:38:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:44,966 INFO L495 AbstractCegarLoop]: Abstraction has 7943 states and 11615 transitions. [2023-12-18 23:38:44,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 7943 states and 11615 transitions. [2023-12-18 23:38:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 23:38:44,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:44,969 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] [2023-12-18 23:38:44,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:38:44,970 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:44,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2023-12-18 23:38:44,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:44,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422223473] [2023-12-18 23:38:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:44,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:45,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:45,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422223473] [2023-12-18 23:38:45,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422223473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:45,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:45,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474708851] [2023-12-18 23:38:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:45,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:45,076 INFO L87 Difference]: Start difference. First operand 7943 states and 11615 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) [2023-12-18 23:38:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:45,175 INFO L93 Difference]: Finished difference Result 11996 states and 17467 transitions. [2023-12-18 23:38:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:45,176 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 [2023-12-18 23:38:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:45,184 INFO L225 Difference]: With dead ends: 11996 [2023-12-18 23:38:45,184 INFO L226 Difference]: Without dead ends: 6338 [2023-12-18 23:38:45,191 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 [2023-12-18 23:38:45,191 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:45,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2023-12-18 23:38:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 6336. [2023-12-18 23:38:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6334 states have (on average 1.4777391853489106) internal successors, (9360), 6335 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 9360 transitions. [2023-12-18 23:38:45,307 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 9360 transitions. Word has length 63 [2023-12-18 23:38:45,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:45,308 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 9360 transitions. [2023-12-18 23:38:45,308 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) [2023-12-18 23:38:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 9360 transitions. [2023-12-18 23:38:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 23:38:45,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:45,310 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] [2023-12-18 23:38:45,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:38:45,311 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:45,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2023-12-18 23:38:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090511950] [2023-12-18 23:38:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:38:45,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:45,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090511950] [2023-12-18 23:38:45,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090511950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:45,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:45,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 23:38:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637214998] [2023-12-18 23:38:45,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:45,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 23:38:45,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:45,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 23:38:45,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:38:45,416 INFO L87 Difference]: Start difference. First operand 6336 states and 9360 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:45,621 INFO L93 Difference]: Finished difference Result 9930 states and 14549 transitions. [2023-12-18 23:38:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 23:38:45,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-18 23:38:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:45,639 INFO L225 Difference]: With dead ends: 9930 [2023-12-18 23:38:45,639 INFO L226 Difference]: Without dead ends: 9032 [2023-12-18 23:38:45,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-18 23:38:45,645 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 4655 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:45,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 3379 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:45,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2023-12-18 23:38:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 7232. [2023-12-18 23:38:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7232 states, 7230 states have (on average 1.4716459197787) internal successors, (10640), 7231 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:45,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7232 states to 7232 states and 10640 transitions. [2023-12-18 23:38:45,846 INFO L78 Accepts]: Start accepts. Automaton has 7232 states and 10640 transitions. Word has length 63 [2023-12-18 23:38:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:45,846 INFO L495 AbstractCegarLoop]: Abstraction has 7232 states and 10640 transitions. [2023-12-18 23:38:45,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7232 states and 10640 transitions. [2023-12-18 23:38:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-18 23:38:45,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:45,848 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] [2023-12-18 23:38:45,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 23:38:45,848 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:45,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2023-12-18 23:38:45,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:45,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949408653] [2023-12-18 23:38:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:45,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:45,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949408653] [2023-12-18 23:38:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949408653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:45,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206802752] [2023-12-18 23:38:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:45,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:45,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:45,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:45,946 INFO L87 Difference]: Start difference. First operand 7232 states and 10640 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2023-12-18 23:38:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:46,026 INFO L93 Difference]: Finished difference Result 9700 states and 14162 transitions. [2023-12-18 23:38:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:46,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 [2023-12-18 23:38:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:46,035 INFO L225 Difference]: With dead ends: 9700 [2023-12-18 23:38:46,035 INFO L226 Difference]: Without dead ends: 4770 [2023-12-18 23:38:46,042 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 [2023-12-18 23:38:46,044 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:46,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2023-12-18 23:38:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4768. [2023-12-18 23:38:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4766 states have (on average 1.4846831724716743) internal successors, (7076), 4767 states have internal predecessors, (7076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 7076 transitions. [2023-12-18 23:38:46,149 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 7076 transitions. Word has length 64 [2023-12-18 23:38:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:46,149 INFO L495 AbstractCegarLoop]: Abstraction has 4768 states and 7076 transitions. [2023-12-18 23:38:46,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2023-12-18 23:38:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 7076 transitions. [2023-12-18 23:38:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-18 23:38:46,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:46,151 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] [2023-12-18 23:38:46,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 23:38:46,151 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:46,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2023-12-18 23:38:46,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:46,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722418921] [2023-12-18 23:38:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:46,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:46,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:46,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722418921] [2023-12-18 23:38:46,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722418921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:46,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:46,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:46,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761441948] [2023-12-18 23:38:46,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:46,217 INFO L87 Difference]: Start difference. First operand 4768 states and 7076 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:46,312 INFO L93 Difference]: Finished difference Result 6004 states and 8816 transitions. [2023-12-18 23:38:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-18 23:38:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:46,319 INFO L225 Difference]: With dead ends: 6004 [2023-12-18 23:38:46,319 INFO L226 Difference]: Without dead ends: 3538 [2023-12-18 23:38:46,323 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 [2023-12-18 23:38:46,323 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:46,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:46,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2023-12-18 23:38:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3536. [2023-12-18 23:38:46,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5042444821731749) internal successors, (5316), 3535 states have internal predecessors, (5316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5316 transitions. [2023-12-18 23:38:46,395 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5316 transitions. Word has length 66 [2023-12-18 23:38:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:46,396 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5316 transitions. [2023-12-18 23:38:46,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5316 transitions. [2023-12-18 23:38:46,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-18 23:38:46,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:46,397 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] [2023-12-18 23:38:46,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 23:38:46,398 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:46,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2023-12-18 23:38:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:46,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928186982] [2023-12-18 23:38:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:46,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:46,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:46,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928186982] [2023-12-18 23:38:46,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928186982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:38:46,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:38:46,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:38:46,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243597801] [2023-12-18 23:38:46,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:38:46,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:38:46,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:38:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:38:46,470 INFO L87 Difference]: Start difference. First operand 3536 states and 5316 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:46,505 INFO L93 Difference]: Finished difference Result 4156 states and 6176 transitions. [2023-12-18 23:38:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:38:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-18 23:38:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:46,510 INFO L225 Difference]: With dead ends: 4156 [2023-12-18 23:38:46,510 INFO L226 Difference]: Without dead ends: 2922 [2023-12-18 23:38:46,512 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 [2023-12-18 23:38:46,512 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:46,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:38:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2023-12-18 23:38:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2023-12-18 23:38:46,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.523989033584647) internal successors, (4447), 2919 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4447 transitions. [2023-12-18 23:38:46,559 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4447 transitions. Word has length 68 [2023-12-18 23:38:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:46,559 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4447 transitions. [2023-12-18 23:38:46,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4447 transitions. [2023-12-18 23:38:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-18 23:38:46,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:46,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:38:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-18 23:38:46,560 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:46,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2023-12-18 23:38:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646807470] [2023-12-18 23:38:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:47,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:47,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646807470] [2023-12-18 23:38:47,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646807470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:38:47,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001598141] [2023-12-18 23:38:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:47,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:38:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:38:47,617 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) [2023-12-18 23:38:47,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 23:38:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:47,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-18 23:38:47,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:38:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:38:47,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:38:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:38:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001598141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:38:48,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:38:48,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:38:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442415358] [2023-12-18 23:38:48,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:38:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:38:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:38:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:38:48,020 INFO L87 Difference]: Start difference. First operand 2920 states and 4447 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:49,914 INFO L93 Difference]: Finished difference Result 7075 states and 9998 transitions. [2023-12-18 23:38:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-18 23:38:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-18 23:38:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:49,922 INFO L225 Difference]: With dead ends: 7075 [2023-12-18 23:38:49,923 INFO L226 Difference]: Without dead ends: 6457 [2023-12-18 23:38:49,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:38:49,925 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 14402 mSDsluCounter, 6297 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14402 SdHoareTripleChecker+Valid, 7803 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:49,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14402 Valid, 7803 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:38:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2023-12-18 23:38:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6269. [2023-12-18 23:38:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 6267 states have (on average 1.3859901069092069) internal successors, (8686), 6268 states have internal predecessors, (8686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 8686 transitions. [2023-12-18 23:38:50,034 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 8686 transitions. Word has length 70 [2023-12-18 23:38:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:50,034 INFO L495 AbstractCegarLoop]: Abstraction has 6269 states and 8686 transitions. [2023-12-18 23:38:50,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 8686 transitions. [2023-12-18 23:38:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 23:38:50,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:50,035 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] [2023-12-18 23:38:50,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 23:38:50,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:38:50,240 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:50,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2128128912, now seen corresponding path program 1 times [2023-12-18 23:38:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927654262] [2023-12-18 23:38:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:51,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927654262] [2023-12-18 23:38:51,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927654262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:38:51,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189994067] [2023-12-18 23:38:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:51,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:38:51,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:38:51,790 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) [2023-12-18 23:38:51,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 23:38:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:51,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-18 23:38:51,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:38:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:52,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:38:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189994067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:38:52,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:38:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-18 23:38:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46524460] [2023-12-18 23:38:52,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:38:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:38:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:38:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:38:52,935 INFO L87 Difference]: Start difference. First operand 6269 states and 8686 transitions. Second operand has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:54,430 INFO L93 Difference]: Finished difference Result 17567 states and 23118 transitions. [2023-12-18 23:38:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-18 23:38:54,430 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 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 71 [2023-12-18 23:38:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:54,446 INFO L225 Difference]: With dead ends: 17567 [2023-12-18 23:38:54,447 INFO L226 Difference]: Without dead ends: 14085 [2023-12-18 23:38:54,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=565, Invalid=2515, Unknown=0, NotChecked=0, Total=3080 [2023-12-18 23:38:54,453 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 23415 mSDsluCounter, 7994 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23415 SdHoareTripleChecker+Valid, 9491 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:54,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23415 Valid, 9491 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 23:38:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14085 states. [2023-12-18 23:38:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14085 to 12747. [2023-12-18 23:38:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12747 states, 12745 states have (on average 1.3293840721851706) internal successors, (16943), 12746 states have internal predecessors, (16943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12747 states to 12747 states and 16943 transitions. [2023-12-18 23:38:54,726 INFO L78 Accepts]: Start accepts. Automaton has 12747 states and 16943 transitions. Word has length 71 [2023-12-18 23:38:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:54,727 INFO L495 AbstractCegarLoop]: Abstraction has 12747 states and 16943 transitions. [2023-12-18 23:38:54,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12747 states and 16943 transitions. [2023-12-18 23:38:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 23:38:54,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:54,728 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] [2023-12-18 23:38:54,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 23:38:54,932 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,SelfDestructingSolverStorable20 [2023-12-18 23:38:54,932 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:54,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000624, now seen corresponding path program 1 times [2023-12-18 23:38:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506141415] [2023-12-18 23:38:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:55,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506141415] [2023-12-18 23:38:55,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506141415] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:38:55,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168264374] [2023-12-18 23:38:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:55,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:38:55,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:38:55,150 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) [2023-12-18 23:38:55,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 23:38:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:55,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 23:38:55,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:38:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:55,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:38:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:56,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168264374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:38:56,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:38:56,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-12-18 23:38:56,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574808466] [2023-12-18 23:38:56,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:38:56,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 23:38:56,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:56,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 23:38:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-12-18 23:38:56,131 INFO L87 Difference]: Start difference. First operand 12747 states and 16943 transitions. Second operand has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:38:57,622 INFO L93 Difference]: Finished difference Result 23977 states and 31206 transitions. [2023-12-18 23:38:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-18 23:38:57,622 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 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 71 [2023-12-18 23:38:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:38:57,639 INFO L225 Difference]: With dead ends: 23977 [2023-12-18 23:38:57,639 INFO L226 Difference]: Without dead ends: 14007 [2023-12-18 23:38:57,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2023-12-18 23:38:57,649 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23154 mSDsluCounter, 8039 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23154 SdHoareTripleChecker+Valid, 9557 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:38:57,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23154 Valid, 9557 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:38:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2023-12-18 23:38:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 12491. [2023-12-18 23:38:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12489 states have (on average 1.3102730402754423) internal successors, (16364), 12490 states have internal predecessors, (16364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 16364 transitions. [2023-12-18 23:38:57,940 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 16364 transitions. Word has length 71 [2023-12-18 23:38:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:38:57,940 INFO L495 AbstractCegarLoop]: Abstraction has 12491 states and 16364 transitions. [2023-12-18 23:38:57,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.576923076923077) internal successors, (197), 25 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:38:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 16364 transitions. [2023-12-18 23:38:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 23:38:57,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:38:57,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:38:57,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 23:38:58,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:38:58,146 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:38:58,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:38:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1053335691, now seen corresponding path program 1 times [2023-12-18 23:38:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:38:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204812106] [2023-12-18 23:38:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:38:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:58,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:38:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204812106] [2023-12-18 23:38:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204812106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:38:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119427912] [2023-12-18 23:38:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:38:58,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:38:58,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:38:58,399 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) [2023-12-18 23:38:58,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 23:38:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:38:58,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:38:58,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:38:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:58,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:38:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:38:59,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119427912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:38:59,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:38:59,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-18 23:38:59,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820266604] [2023-12-18 23:38:59,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:38:59,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:38:59,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:38:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:38:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:38:59,579 INFO L87 Difference]: Start difference. First operand 12491 states and 16364 transitions. Second operand has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:39:00,494 INFO L93 Difference]: Finished difference Result 33247 states and 42267 transitions. [2023-12-18 23:39:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:39:00,495 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 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 72 [2023-12-18 23:39:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:39:00,518 INFO L225 Difference]: With dead ends: 33247 [2023-12-18 23:39:00,518 INFO L226 Difference]: Without dead ends: 24365 [2023-12-18 23:39:00,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:39:00,530 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 9122 mSDsluCounter, 6331 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9122 SdHoareTripleChecker+Valid, 7842 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:39:00,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9122 Valid, 7842 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:39:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24365 states. [2023-12-18 23:39:01,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24365 to 22759. [2023-12-18 23:39:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22759 states, 22757 states have (on average 1.2704662301709364) internal successors, (28912), 22758 states have internal predecessors, (28912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22759 states to 22759 states and 28912 transitions. [2023-12-18 23:39:01,151 INFO L78 Accepts]: Start accepts. Automaton has 22759 states and 28912 transitions. Word has length 72 [2023-12-18 23:39:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:39:01,151 INFO L495 AbstractCegarLoop]: Abstraction has 22759 states and 28912 transitions. [2023-12-18 23:39:01,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 22759 states and 28912 transitions. [2023-12-18 23:39:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-18 23:39:01,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:39:01,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:39:01,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 23:39:01,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:01,357 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:39:01,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:39:01,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2023-12-18 23:39:01,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:39:01,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208654526] [2023-12-18 23:39:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:01,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:39:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:39:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208654526] [2023-12-18 23:39:01,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208654526] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:39:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528409229] [2023-12-18 23:39:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:01,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:01,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:39:01,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:39:01,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 23:39:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:02,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-18 23:39:02,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:39:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:03,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:39:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:05,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528409229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:39:05,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:39:05,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2023-12-18 23:39:05,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113137214] [2023-12-18 23:39:05,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:39:05,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-18 23:39:05,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:39:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-18 23:39:05,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:39:05,213 INFO L87 Difference]: Start difference. First operand 22759 states and 28912 transitions. Second operand has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:39:20,347 INFO L93 Difference]: Finished difference Result 43182 states and 54179 transitions. [2023-12-18 23:39:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-12-18 23:39:20,348 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 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 73 [2023-12-18 23:39:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:39:20,380 INFO L225 Difference]: With dead ends: 43182 [2023-12-18 23:39:20,380 INFO L226 Difference]: Without dead ends: 32564 [2023-12-18 23:39:20,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11300 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=6000, Invalid=23070, Unknown=0, NotChecked=0, Total=29070 [2023-12-18 23:39:20,397 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 13839 mSDsluCounter, 12926 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13839 SdHoareTripleChecker+Valid, 14466 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:39:20,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13839 Valid, 14466 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 23:39:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32564 states. [2023-12-18 23:39:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32564 to 24849. [2023-12-18 23:39:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24849 states, 24847 states have (on average 1.2686441019036503) internal successors, (31522), 24848 states have internal predecessors, (31522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24849 states to 24849 states and 31522 transitions. [2023-12-18 23:39:21,289 INFO L78 Accepts]: Start accepts. Automaton has 24849 states and 31522 transitions. Word has length 73 [2023-12-18 23:39:21,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:39:21,289 INFO L495 AbstractCegarLoop]: Abstraction has 24849 states and 31522 transitions. [2023-12-18 23:39:21,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:21,290 INFO L276 IsEmpty]: Start isEmpty. Operand 24849 states and 31522 transitions. [2023-12-18 23:39:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-18 23:39:21,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:39:21,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:39:21,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-18 23:39:21,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 23:39:21,495 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:39:21,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:39:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1960468014, now seen corresponding path program 1 times [2023-12-18 23:39:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:39:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517184383] [2023-12-18 23:39:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:21,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:39:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:21,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:39:21,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517184383] [2023-12-18 23:39:21,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517184383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:39:21,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548899388] [2023-12-18 23:39:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:21,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:39:21,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:39:21,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 23:39:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:21,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 23:39:21,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:39:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:22,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:39:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548899388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:39:23,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:39:23,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-18 23:39:23,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337531028] [2023-12-18 23:39:23,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:39:23,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 23:39:23,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:39:23,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 23:39:23,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 23:39:23,531 INFO L87 Difference]: Start difference. First operand 24849 states and 31522 transitions. Second operand has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:39:25,981 INFO L93 Difference]: Finished difference Result 32482 states and 40921 transitions. [2023-12-18 23:39:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-18 23:39:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 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 73 [2023-12-18 23:39:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:39:25,997 INFO L225 Difference]: With dead ends: 32482 [2023-12-18 23:39:25,997 INFO L226 Difference]: Without dead ends: 15847 [2023-12-18 23:39:26,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2023-12-18 23:39:26,006 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 9702 mSDsluCounter, 21006 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9702 SdHoareTripleChecker+Valid, 22505 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:39:26,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9702 Valid, 22505 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:39:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15847 states. [2023-12-18 23:39:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15847 to 15095. [2023-12-18 23:39:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15095 states, 15093 states have (on average 1.2936460610879215) internal successors, (19525), 15094 states have internal predecessors, (19525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15095 states to 15095 states and 19525 transitions. [2023-12-18 23:39:26,495 INFO L78 Accepts]: Start accepts. Automaton has 15095 states and 19525 transitions. Word has length 73 [2023-12-18 23:39:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:39:26,496 INFO L495 AbstractCegarLoop]: Abstraction has 15095 states and 19525 transitions. [2023-12-18 23:39:26,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.454545454545454) internal successors, (180), 33 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 15095 states and 19525 transitions. [2023-12-18 23:39:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-18 23:39:26,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:39:26,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:39:26,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 23:39:26,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:26,702 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:39:26,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:39:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1066359965, now seen corresponding path program 1 times [2023-12-18 23:39:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:39:26,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368420748] [2023-12-18 23:39:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:39:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 36 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:27,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:39:27,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368420748] [2023-12-18 23:39:27,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368420748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:39:27,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829863291] [2023-12-18 23:39:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:27,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:39:27,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:39:27,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 23:39:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:27,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:39:27,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:39:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:27,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:39:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 44 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829863291] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:39:29,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:39:29,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-18 23:39:29,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105085056] [2023-12-18 23:39:29,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:39:29,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 23:39:29,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:39:29,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 23:39:29,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-18 23:39:29,414 INFO L87 Difference]: Start difference. First operand 15095 states and 19525 transitions. Second operand has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:39:33,108 INFO L93 Difference]: Finished difference Result 42752 states and 53997 transitions. [2023-12-18 23:39:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-18 23:39:33,108 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-18 23:39:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:39:33,138 INFO L225 Difference]: With dead ends: 42752 [2023-12-18 23:39:33,138 INFO L226 Difference]: Without dead ends: 31402 [2023-12-18 23:39:33,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1362, Invalid=5778, Unknown=0, NotChecked=0, Total=7140 [2023-12-18 23:39:33,149 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 24565 mSDsluCounter, 15509 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24565 SdHoareTripleChecker+Valid, 17019 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:39:33,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24565 Valid, 17019 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 23:39:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31402 states. [2023-12-18 23:39:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31402 to 26308. [2023-12-18 23:39:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26308 states, 26306 states have (on average 1.2477001444537368) internal successors, (32822), 26307 states have internal predecessors, (32822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26308 states to 26308 states and 32822 transitions. [2023-12-18 23:39:34,256 INFO L78 Accepts]: Start accepts. Automaton has 26308 states and 32822 transitions. Word has length 117 [2023-12-18 23:39:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:39:34,256 INFO L495 AbstractCegarLoop]: Abstraction has 26308 states and 32822 transitions. [2023-12-18 23:39:34,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.625) internal successors, (308), 31 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 26308 states and 32822 transitions. [2023-12-18 23:39:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-18 23:39:34,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:39:34,259 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:39:34,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-18 23:39:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:34,464 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:39:34,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:39:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1802629909, now seen corresponding path program 1 times [2023-12-18 23:39:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:39:34,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268030477] [2023-12-18 23:39:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:34,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:39:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:35,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:39:35,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268030477] [2023-12-18 23:39:35,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268030477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:39:35,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39374866] [2023-12-18 23:39:35,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:35,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:35,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:39:35,017 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:39:35,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 23:39:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:35,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:39:35,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:39:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:35,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:39:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:37,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39374866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:39:37,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:39:37,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-18 23:39:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635854589] [2023-12-18 23:39:37,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:39:37,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-18 23:39:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:39:37,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-18 23:39:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-12-18 23:39:37,324 INFO L87 Difference]: Start difference. First operand 26308 states and 32822 transitions. Second operand has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:39:38,824 INFO L93 Difference]: Finished difference Result 34733 states and 43186 transitions. [2023-12-18 23:39:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-18 23:39:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-18 23:39:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:39:38,846 INFO L225 Difference]: With dead ends: 34733 [2023-12-18 23:39:38,846 INFO L226 Difference]: Without dead ends: 26742 [2023-12-18 23:39:38,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=420, Invalid=1386, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:39:38,850 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 19486 mSDsluCounter, 7795 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19486 SdHoareTripleChecker+Valid, 9315 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:39:38,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19486 Valid, 9315 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:39:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26742 states. [2023-12-18 23:39:39,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26742 to 21526. [2023-12-18 23:39:39,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21526 states, 21524 states have (on average 1.249349563278201) internal successors, (26891), 21525 states have internal predecessors, (26891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21526 states to 21526 states and 26891 transitions. [2023-12-18 23:39:39,760 INFO L78 Accepts]: Start accepts. Automaton has 21526 states and 26891 transitions. Word has length 117 [2023-12-18 23:39:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:39:39,760 INFO L495 AbstractCegarLoop]: Abstraction has 21526 states and 26891 transitions. [2023-12-18 23:39:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.925925925925926) internal successors, (268), 26 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 21526 states and 26891 transitions. [2023-12-18 23:39:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-18 23:39:39,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:39:39,763 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:39:39,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 23:39:39,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-18 23:39:39,968 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:39:39,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:39:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2021574936, now seen corresponding path program 1 times [2023-12-18 23:39:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:39:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185482050] [2023-12-18 23:39:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:39:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:40,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:39:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185482050] [2023-12-18 23:39:40,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185482050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:39:40,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656462303] [2023-12-18 23:39:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:40,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:40,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:39:40,572 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:39:40,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 23:39:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:40,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:39:40,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:39:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:41,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:39:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:42,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656462303] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:39:42,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:39:42,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2023-12-18 23:39:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76776894] [2023-12-18 23:39:42,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:39:42,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 23:39:42,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:39:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 23:39:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2023-12-18 23:39:42,662 INFO L87 Difference]: Start difference. First operand 21526 states and 26891 transitions. Second operand has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:39:44,687 INFO L93 Difference]: Finished difference Result 31940 states and 39702 transitions. [2023-12-18 23:39:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-18 23:39:44,687 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-18 23:39:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:39:44,706 INFO L225 Difference]: With dead ends: 31940 [2023-12-18 23:39:44,706 INFO L226 Difference]: Without dead ends: 22138 [2023-12-18 23:39:44,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=538, Invalid=2114, Unknown=0, NotChecked=0, Total=2652 [2023-12-18 23:39:44,713 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 22694 mSDsluCounter, 12125 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22694 SdHoareTripleChecker+Valid, 13634 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:39:44,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22694 Valid, 13634 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:39:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22138 states. [2023-12-18 23:39:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22138 to 21526. [2023-12-18 23:39:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21526 states, 21524 states have (on average 1.2395465526853744) internal successors, (26680), 21525 states have internal predecessors, (26680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21526 states to 21526 states and 26680 transitions. [2023-12-18 23:39:45,715 INFO L78 Accepts]: Start accepts. Automaton has 21526 states and 26680 transitions. Word has length 118 [2023-12-18 23:39:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:39:45,715 INFO L495 AbstractCegarLoop]: Abstraction has 21526 states and 26680 transitions. [2023-12-18 23:39:45,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:39:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21526 states and 26680 transitions. [2023-12-18 23:39:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-18 23:39:45,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:39:45,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:39:45,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 23:39:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 23:39:45,923 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:39:45,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:39:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2083309595, now seen corresponding path program 1 times [2023-12-18 23:39:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:39:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706902104] [2023-12-18 23:39:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:39:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:47,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:39:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706902104] [2023-12-18 23:39:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706902104] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:39:47,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064472070] [2023-12-18 23:39:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:39:47,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:39:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:39:47,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:39:47,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 23:39:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:39:47,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-18 23:39:47,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:39:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:49,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:39:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:39:54,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064472070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:39:54,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:39:54,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2023-12-18 23:39:54,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735509080] [2023-12-18 23:39:54,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:39:54,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-18 23:39:54,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:39:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-18 23:39:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=4772, Unknown=0, NotChecked=0, Total=5112 [2023-12-18 23:39:54,266 INFO L87 Difference]: Start difference. First operand 21526 states and 26680 transitions. Second operand has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:41:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:41:52,529 INFO L93 Difference]: Finished difference Result 47955 states and 58125 transitions. [2023-12-18 23:41:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2023-12-18 23:41:52,529 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-18 23:41:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:41:52,567 INFO L225 Difference]: With dead ends: 47955 [2023-12-18 23:41:52,567 INFO L226 Difference]: Without dead ends: 44706 [2023-12-18 23:41:52,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77420 ImplicationChecksByTransitivity, 107.1s TimeCoverageRelationStatistics Valid=19199, Invalid=183751, Unknown=0, NotChecked=0, Total=202950 [2023-12-18 23:41:52,605 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 36440 mSDsluCounter, 50790 mSDsCounter, 0 mSdLazyCounter, 11391 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36440 SdHoareTripleChecker+Valid, 52478 SdHoareTripleChecker+Invalid, 11870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 11391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:41:52,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36440 Valid, 52478 Invalid, 11870 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [479 Valid, 11391 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-18 23:41:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44706 states. [2023-12-18 23:41:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44706 to 29206. [2023-12-18 23:41:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29206 states, 29204 states have (on average 1.2255170524585672) internal successors, (35790), 29205 states have internal predecessors, (35790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:41:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29206 states to 29206 states and 35790 transitions. [2023-12-18 23:41:54,832 INFO L78 Accepts]: Start accepts. Automaton has 29206 states and 35790 transitions. Word has length 119 [2023-12-18 23:41:54,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:41:54,832 INFO L495 AbstractCegarLoop]: Abstraction has 29206 states and 35790 transitions. [2023-12-18 23:41:54,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.569444444444445) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:41:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 29206 states and 35790 transitions. [2023-12-18 23:41:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-18 23:41:54,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:41:54,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:41:54,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 23:41:55,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 23:41:55,065 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:41:55,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:41:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash -970063708, now seen corresponding path program 1 times [2023-12-18 23:41:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:41:55,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565508954] [2023-12-18 23:41:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:41:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:41:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:41:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:41:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:41:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565508954] [2023-12-18 23:41:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565508954] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:41:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323823375] [2023-12-18 23:41:55,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:41:55,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:41:55,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:41:55,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:41:55,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 23:41:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:41:55,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-18 23:41:55,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:41:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:41:57,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:42:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 39 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323823375] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:42:06,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:42:06,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 21] total 54 [2023-12-18 23:42:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586961461] [2023-12-18 23:42:06,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:42:06,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-18 23:42:06,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:06,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-18 23:42:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2023-12-18 23:42:06,314 INFO L87 Difference]: Start difference. First operand 29206 states and 35790 transitions. Second operand has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:44,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:42:44,403 INFO L93 Difference]: Finished difference Result 74031 states and 89722 transitions. [2023-12-18 23:42:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-18 23:42:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-18 23:42:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:42:44,456 INFO L225 Difference]: With dead ends: 74031 [2023-12-18 23:42:44,457 INFO L226 Difference]: Without dead ends: 49682 [2023-12-18 23:42:44,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21563 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=8718, Invalid=55544, Unknown=0, NotChecked=0, Total=64262 [2023-12-18 23:42:44,467 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 31303 mSDsluCounter, 32725 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31303 SdHoareTripleChecker+Valid, 34370 SdHoareTripleChecker+Invalid, 4699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-18 23:42:44,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31303 Valid, 34370 Invalid, 4699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [612 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-18 23:42:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49682 states. [2023-12-18 23:42:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49682 to 39063. [2023-12-18 23:42:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39063 states, 39061 states have (on average 1.2195284298917077) internal successors, (47636), 39062 states have internal predecessors, (47636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39063 states to 39063 states and 47636 transitions. [2023-12-18 23:42:48,038 INFO L78 Accepts]: Start accepts. Automaton has 39063 states and 47636 transitions. Word has length 120 [2023-12-18 23:42:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:42:48,038 INFO L495 AbstractCegarLoop]: Abstraction has 39063 states and 47636 transitions. [2023-12-18 23:42:48,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.425925925925926) internal successors, (347), 54 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:42:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 39063 states and 47636 transitions. [2023-12-18 23:42:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-18 23:42:48,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:42:48,049 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:42:48,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 23:42:48,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:42:48,254 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:42:48,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:42:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash 215697854, now seen corresponding path program 1 times [2023-12-18 23:42:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:42:48,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494195819] [2023-12-18 23:42:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:42:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:42:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494195819] [2023-12-18 23:42:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494195819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:42:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659922221] [2023-12-18 23:42:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:42:49,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:42:49,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:42:49,252 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:42:49,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 23:42:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:42:49,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-18 23:42:49,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:42:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:52,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:42:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:42:57,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659922221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:42:57,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:42:57,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 30] total 77 [2023-12-18 23:42:57,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036099165] [2023-12-18 23:42:57,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:42:57,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-18 23:42:57,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:42:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-18 23:42:57,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=5409, Unknown=0, NotChecked=0, Total=5852 [2023-12-18 23:42:57,618 INFO L87 Difference]: Start difference. First operand 39063 states and 47636 transitions. Second operand has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:45:27,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:45:27,468 INFO L93 Difference]: Finished difference Result 71138 states and 85073 transitions. [2023-12-18 23:45:27,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 346 states. [2023-12-18 23:45:27,469 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-18 23:45:27,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:45:27,531 INFO L225 Difference]: With dead ends: 71138 [2023-12-18 23:45:27,531 INFO L226 Difference]: Without dead ends: 67685 [2023-12-18 23:45:27,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64378 ImplicationChecksByTransitivity, 136.4s TimeCoverageRelationStatistics Valid=16172, Invalid=153984, Unknown=0, NotChecked=0, Total=170156 [2023-12-18 23:45:27,547 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 33192 mSDsluCounter, 45970 mSDsCounter, 0 mSdLazyCounter, 8148 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33192 SdHoareTripleChecker+Valid, 47532 SdHoareTripleChecker+Invalid, 8517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 8148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:45:27,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33192 Valid, 47532 Invalid, 8517 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [369 Valid, 8148 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-18 23:45:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67685 states. [2023-12-18 23:45:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67685 to 41814. [2023-12-18 23:45:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41814 states, 41812 states have (on average 1.2164211231225486) internal successors, (50861), 41813 states have internal predecessors, (50861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:45:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41814 states to 41814 states and 50861 transitions. [2023-12-18 23:45:31,850 INFO L78 Accepts]: Start accepts. Automaton has 41814 states and 50861 transitions. Word has length 120 [2023-12-18 23:45:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:45:31,850 INFO L495 AbstractCegarLoop]: Abstraction has 41814 states and 50861 transitions. [2023-12-18 23:45:31,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.51948051948052) internal successors, (348), 77 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:45:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 41814 states and 50861 transitions. [2023-12-18 23:45:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-18 23:45:31,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:45:31,853 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:45:31,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-18 23:45:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:45:32,059 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:45:32,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:45:32,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1063258684, now seen corresponding path program 1 times [2023-12-18 23:45:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:45:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758765610] [2023-12-18 23:45:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:45:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:45:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:45:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:45:32,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:45:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758765610] [2023-12-18 23:45:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758765610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:45:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894094004] [2023-12-18 23:45:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:45:32,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:45:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:45:32,567 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:45:32,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 23:45:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:45:32,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 23:45:32,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:45:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:45:33,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:45:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:45:35,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894094004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:45:35,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:45:35,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-12-18 23:45:35,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650951433] [2023-12-18 23:45:35,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:45:35,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-18 23:45:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:45:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-18 23:45:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1087, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 23:45:35,211 INFO L87 Difference]: Start difference. First operand 41814 states and 50861 transitions. Second operand has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:45:52,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:45:52,654 INFO L93 Difference]: Finished difference Result 126447 states and 151744 transitions. [2023-12-18 23:45:52,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-18 23:45:52,654 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-18 23:45:52,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:45:52,740 INFO L225 Difference]: With dead ends: 126447 [2023-12-18 23:45:52,740 INFO L226 Difference]: Without dead ends: 92785 [2023-12-18 23:45:52,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9955 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4209, Invalid=25893, Unknown=0, NotChecked=0, Total=30102 [2023-12-18 23:45:52,755 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 22689 mSDsluCounter, 22538 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22689 SdHoareTripleChecker+Valid, 24114 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:45:52,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22689 Valid, 24114 Invalid, 2491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 23:45:52,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92785 states. [2023-12-18 23:45:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92785 to 40384. [2023-12-18 23:45:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40384 states, 40382 states have (on average 1.2019216482591253) internal successors, (48536), 40383 states have internal predecessors, (48536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:45:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40384 states to 40384 states and 48536 transitions. [2023-12-18 23:45:57,387 INFO L78 Accepts]: Start accepts. Automaton has 40384 states and 48536 transitions. Word has length 120 [2023-12-18 23:45:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:45:57,387 INFO L495 AbstractCegarLoop]: Abstraction has 40384 states and 48536 transitions. [2023-12-18 23:45:57,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.485714285714286) internal successors, (332), 35 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:45:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 40384 states and 48536 transitions. [2023-12-18 23:45:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-18 23:45:57,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:45:57,390 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:45:57,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-18 23:45:57,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-18 23:45:57,594 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:45:57,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:45:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1949816879, now seen corresponding path program 1 times [2023-12-18 23:45:57,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:45:57,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625366460] [2023-12-18 23:45:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:45:57,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:45:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:45:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:45:58,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:45:58,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625366460] [2023-12-18 23:45:58,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625366460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:45:58,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699483868] [2023-12-18 23:45:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:45:58,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:45:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:45:58,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:45:58,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 23:45:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:45:58,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-18 23:45:58,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:46:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:46:05,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:46:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:46:14,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699483868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:46:14,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:46:14,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 36, 37] total 98 [2023-12-18 23:46:14,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735007506] [2023-12-18 23:46:14,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:46:14,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-18 23:46:14,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:46:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-18 23:46:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=8619, Unknown=0, NotChecked=0, Total=9506 [2023-12-18 23:46:14,416 INFO L87 Difference]: Start difference. First operand 40384 states and 48536 transitions. Second operand has 98 states, 98 states have (on average 3.489795918367347) internal successors, (342), 98 states have internal predecessors, (342), 0 states have call successors, (0), 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... [2023-12-18 23:52:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 540 states. [2023-12-18 23:52:31,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 622 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169384 ImplicationChecksByTransitivity, 368.6s TimeCoverageRelationStatistics Valid=37560, Invalid=351192, Unknown=0, NotChecked=0, Total=388752 [2023-12-18 23:52:31,306 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 12955 mSDsluCounter, 9905 mSDsCounter, 0 mSdLazyCounter, 7349 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12955 SdHoareTripleChecker+Valid, 10219 SdHoareTripleChecker+Invalid, 7936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 7349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:52:31,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12955 Valid, 10219 Invalid, 7936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [587 Valid, 7349 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-18 23:52:31,307 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-18 23:52:31,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 23:52:31,330 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:52:31,330 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 [2023-12-18 23:52:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:52:31,512 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (40384states) and FLOYD_HOARE automaton (currently 540 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-14-9-4-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-1 context. [2023-12-18 23:52:31,514 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-18 23:52:31,518 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, 1, 1, 1, 1, 1] [2023-12-18 23:52:31,520 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 23:52:31,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:52:31 BoogieIcfgContainer [2023-12-18 23:52:31,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 23:52:31,522 INFO L158 Benchmark]: Toolchain (without parser) took 840335.68ms. Allocated memory was 216.0MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 149.9MB in the beginning and 1.1GB in the end (delta: -990.4MB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-18 23:52:31,523 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 216.0MB. Free memory is still 173.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 23:52:31,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1149.51ms. Allocated memory was 216.0MB in the beginning and 318.8MB in the end (delta: 102.8MB). Free memory was 149.6MB in the beginning and 249.4MB in the end (delta: -99.8MB). Peak memory consumption was 107.5MB. Max. memory is 8.0GB. [2023-12-18 23:52:31,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 307.90ms. Allocated memory is still 318.8MB. Free memory was 249.4MB in the beginning and 225.4MB in the end (delta: 24.0MB). Peak memory consumption was 93.9MB. Max. memory is 8.0GB. [2023-12-18 23:52:31,523 INFO L158 Benchmark]: Boogie Preprocessor took 411.08ms. Allocated memory was 318.8MB in the beginning and 515.9MB in the end (delta: 197.1MB). Free memory was 225.4MB in the beginning and 352.9MB in the end (delta: -127.5MB). Peak memory consumption was 73.1MB. Max. memory is 8.0GB. [2023-12-18 23:52:31,524 INFO L158 Benchmark]: RCFGBuilder took 3172.91ms. Allocated memory was 515.9MB in the beginning and 864.0MB in the end (delta: 348.1MB). Free memory was 352.9MB in the beginning and 634.2MB in the end (delta: -281.2MB). Peak memory consumption was 167.5MB. Max. memory is 8.0GB. [2023-12-18 23:52:31,524 INFO L158 Benchmark]: TraceAbstraction took 835273.17ms. Allocated memory was 864.0MB in the beginning and 2.9GB in the end (delta: 2.1GB). Free memory was 633.1MB in the beginning and 1.1GB in the end (delta: -507.2MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-18 23:52:31,525 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 216.0MB. Free memory is still 173.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1149.51ms. Allocated memory was 216.0MB in the beginning and 318.8MB in the end (delta: 102.8MB). Free memory was 149.6MB in the beginning and 249.4MB in the end (delta: -99.8MB). Peak memory consumption was 107.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 307.90ms. Allocated memory is still 318.8MB. Free memory was 249.4MB in the beginning and 225.4MB in the end (delta: 24.0MB). Peak memory consumption was 93.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 411.08ms. Allocated memory was 318.8MB in the beginning and 515.9MB in the end (delta: 197.1MB). Free memory was 225.4MB in the beginning and 352.9MB in the end (delta: -127.5MB). Peak memory consumption was 73.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3172.91ms. Allocated memory was 515.9MB in the beginning and 864.0MB in the end (delta: 348.1MB). Free memory was 352.9MB in the beginning and 634.2MB in the end (delta: -281.2MB). Peak memory consumption was 167.5MB. Max. memory is 8.0GB. * TraceAbstraction took 835273.17ms. Allocated memory was 864.0MB in the beginning and 2.9GB in the end (delta: 2.1GB). Free memory was 633.1MB in the beginning and 1.1GB in the end (delta: -507.2MB). Peak memory consumption was 1.6GB. 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: 366]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 366). Cancelled while NwaCegarLoop was constructing difference of abstraction (40384states) and FLOYD_HOARE automaton (currently 540 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-14-9-4-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-1 context. - TimeoutResultAtElement [Line: 570]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 570). Cancelled while NwaCegarLoop was constructing difference of abstraction (40384states) and FLOYD_HOARE automaton (currently 540 states, 98 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-14-9-4-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-8-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 822 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 835.2s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 738.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 334765 SdHoareTripleChecker+Valid, 44.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 334765 mSDsluCounter, 329149 SdHoareTripleChecker+Invalid, 39.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 280145 mSDsCounter, 3752 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47536 IncrementalHoareTripleChecker+Invalid, 51288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3752 mSolverCounterUnsat, 49004 mSDtfsCounter, 47536 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5009 GetRequests, 2421 SyntacticMatches, 4 SemanticMatches, 2583 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359985 ImplicationChecksByTransitivity, 677.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41814occurred in iteration=31, InterpolantAutomatonStates: 1545, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.7s AutomataMinimizationTime, 32 MinimizatonAttempts, 137588 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 69.0s InterpolantComputationTime, 3724 NumberOfCodeBlocks, 3724 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 5045 ConstructedInterpolants, 0 QuantifiedInterpolants, 116118 SizeOfPredicates, 126 NumberOfNonLiveVariables, 6216 ConjunctsInSsa, 392 ConjunctsInUnsatCore, 61 InterpolantComputations, 19 PerfectInterpolantSequences, 857/2714 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