/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/eca-rers2012/Problem17_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:09:00,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:09:00,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:09:00,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:09:00,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:09:01,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:09:01,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:09:01,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:09:01,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:09:01,025 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:09:01,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:09:01,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:09:01,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:09:01,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:09:01,027 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:09:01,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:09:01,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:09:01,027 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:09:01,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:09:01,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:09:01,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:09:01,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:09:01,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:09:01,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:09:01,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:09:01,028 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:09:01,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:09:01,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:09:01,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:09:01,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:09:01,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:09:01,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:09:01,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:09:01,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:09:01,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:09:01,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:09:01,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:09:01,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:09:01,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:09:01,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:09:01,031 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:09:01,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:09:01,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:09:01,032 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:09:01,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:09:01,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:09:01,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:09:01,221 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:09:01,223 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:09:01,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2023-12-15 19:09:02,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:09:02,649 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:09:02,650 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2023-12-15 19:09:02,671 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264990032/fb8a223bcfc743dfbf382831dc15a0da/FLAG224b986b5 [2023-12-15 19:09:02,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264990032/fb8a223bcfc743dfbf382831dc15a0da [2023-12-15 19:09:02,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:09:02,691 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:09:02,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:09:02,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:09:02,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:09:02,697 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:09:02" (1/1) ... [2023-12-15 19:09:02,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ca20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:02, skipping insertion in model container [2023-12-15 19:09:02,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:09:02" (1/1) ... [2023-12-15 19:09:02,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:09:02,968 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label17.c[5781,5794] [2023-12-15 19:09:03,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:09:03,396 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:09:03,418 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label17.c[5781,5794] [2023-12-15 19:09:03,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:09:03,672 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:09:03,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03 WrapperNode [2023-12-15 19:09:03,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:09:03,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:09:03,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:09:03,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:09:03,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:03,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:03,868 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-15 19:09:03,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:09:03,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:09:03,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:09:03,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:09:03,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:03,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:03,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,134 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:09:04,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:09:04,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:09:04,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:09:04,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:09:04,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (1/1) ... [2023-12-15 19:09:04,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:09:04,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:09:04,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:09:04,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:09:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:09:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:09:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:09:04,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:09:04,567 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:09:04,568 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:09:06,979 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:09:07,023 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:09:07,023 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:09:07,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:09:07 BoogieIcfgContainer [2023-12-15 19:09:07,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:09:07,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:09:07,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:09:07,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:09:07,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:09:02" (1/3) ... [2023-12-15 19:09:07,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:09:07, skipping insertion in model container [2023-12-15 19:09:07,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:09:03" (2/3) ... [2023-12-15 19:09:07,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:09:07, skipping insertion in model container [2023-12-15 19:09:07,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:09:07" (3/3) ... [2023-12-15 19:09:07,030 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label17.c [2023-12-15 19:09:07,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:09:07,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:09:07,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:09:07,084 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;@2f6e1cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:09:07,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:09:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 19:09:07,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:07,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:07,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:07,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1085236465, now seen corresponding path program 1 times [2023-12-15 19:09:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:07,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031676086] [2023-12-15 19:09:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:07,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:07,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031676086] [2023-12-15 19:09:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031676086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:07,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:07,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:09:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051813338] [2023-12-15 19:09:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:07,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:09:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:09:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:09:07,227 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:07,272 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-15 19:09:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:09:07,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-15 19:09:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:07,308 INFO L225 Difference]: With dead ends: 1055 [2023-12-15 19:09:07,308 INFO L226 Difference]: Without dead ends: 526 [2023-12-15 19:09:07,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:09:07,318 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:07,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:09:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-15 19:09:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-15 19:09:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-15 19:09:07,386 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 37 [2023-12-15 19:09:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:07,386 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-15 19:09:07,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-15 19:09:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 19:09:07,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:07,387 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] [2023-12-15 19:09:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:09:07,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1566685714, now seen corresponding path program 1 times [2023-12-15 19:09:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172884055] [2023-12-15 19:09:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:07,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172884055] [2023-12-15 19:09:07,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172884055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:07,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:09:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988871508] [2023-12-15 19:09:07,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:07,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:07,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:07,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:07,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:07,526 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:09,760 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-15 19:09:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-12-15 19:09:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:09,765 INFO L225 Difference]: With dead ends: 1522 [2023-12-15 19:09:09,765 INFO L226 Difference]: Without dead ends: 997 [2023-12-15 19:09:09,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:09,766 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 473 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:09,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:09:09,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-15 19:09:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-15 19:09:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-15 19:09:09,790 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 37 [2023-12-15 19:09:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:09,790 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-15 19:09:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-15 19:09:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 19:09:09,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:09,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:09:09,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:09:09,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:09,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2090111297, now seen corresponding path program 1 times [2023-12-15 19:09:09,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:09,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682423307] [2023-12-15 19:09:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:09,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:10,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682423307] [2023-12-15 19:09:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682423307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:10,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:10,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:09:10,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634227320] [2023-12-15 19:09:10,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:10,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:10,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:10,048 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:11,872 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2023-12-15 19:09:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:11,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-15 19:09:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:11,877 INFO L225 Difference]: With dead ends: 2840 [2023-12-15 19:09:11,877 INFO L226 Difference]: Without dead ends: 1860 [2023-12-15 19:09:11,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:11,879 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:11,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:09:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-15 19:09:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2023-12-15 19:09:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2023-12-15 19:09:11,914 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 102 [2023-12-15 19:09:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:11,918 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2023-12-15 19:09:11,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:11,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2023-12-15 19:09:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 19:09:11,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:11,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:09:11,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:11,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash -10450956, now seen corresponding path program 1 times [2023-12-15 19:09:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:11,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077825349] [2023-12-15 19:09:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:11,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077825349] [2023-12-15 19:09:12,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077825349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:12,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:09:12,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860067820] [2023-12-15 19:09:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:12,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:12,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:12,277 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:14,338 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2023-12-15 19:09:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:14,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2023-12-15 19:09:14,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:14,347 INFO L225 Difference]: With dead ends: 4590 [2023-12-15 19:09:14,347 INFO L226 Difference]: Without dead ends: 2735 [2023-12-15 19:09:14,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:14,351 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:14,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 19:09:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-12-15 19:09:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2023-12-15 19:09:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2023-12-15 19:09:14,391 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 142 [2023-12-15 19:09:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:14,391 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2023-12-15 19:09:14,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2023-12-15 19:09:14,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 19:09:14,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:14,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:14,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:09:14,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:14,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:14,393 INFO L85 PathProgramCache]: Analyzing trace with hash 487329285, now seen corresponding path program 1 times [2023-12-15 19:09:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:14,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044310620] [2023-12-15 19:09:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:14,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:14,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044310620] [2023-12-15 19:09:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044310620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:14,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:14,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:09:14,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438310796] [2023-12-15 19:09:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:14,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:14,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:14,520 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:15,918 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2023-12-15 19:09:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:15,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-15 19:09:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:15,953 INFO L225 Difference]: With dead ends: 6708 [2023-12-15 19:09:15,953 INFO L226 Difference]: Without dead ends: 3994 [2023-12-15 19:09:15,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:15,969 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:15,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:09:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-12-15 19:09:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2023-12-15 19:09:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2023-12-15 19:09:16,019 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 148 [2023-12-15 19:09:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:16,019 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2023-12-15 19:09:16,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2023-12-15 19:09:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-15 19:09:16,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:16,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:09:16,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:09:16,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:16,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -456628353, now seen corresponding path program 1 times [2023-12-15 19:09:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:16,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448752441] [2023-12-15 19:09:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:16,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:16,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448752441] [2023-12-15 19:09:16,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448752441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:16,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:16,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:09:16,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891807900] [2023-12-15 19:09:16,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:16,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:09:16,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:16,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:09:16,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:09:16,289 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:18,512 INFO L93 Difference]: Finished difference Result 8006 states and 10509 transitions. [2023-12-15 19:09:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:09:18,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2023-12-15 19:09:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:18,530 INFO L225 Difference]: With dead ends: 8006 [2023-12-15 19:09:18,531 INFO L226 Difference]: Without dead ends: 4866 [2023-12-15 19:09:18,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:09:18,538 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1655 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:18,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 839 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 19:09:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2023-12-15 19:09:18,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4851. [2023-12-15 19:09:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2023-12-15 19:09:18,633 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 185 [2023-12-15 19:09:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:18,634 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2023-12-15 19:09:18,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2023-12-15 19:09:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-15 19:09:18,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:18,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:09:18,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:09:18,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:18,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash -290281424, now seen corresponding path program 1 times [2023-12-15 19:09:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:18,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141953646] [2023-12-15 19:09:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:18,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 19:09:18,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:18,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141953646] [2023-12-15 19:09:18,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141953646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:18,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492056542] [2023-12-15 19:09:18,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:18,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:18,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:18,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:18,731 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:20,321 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2023-12-15 19:09:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:20,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-15 19:09:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:20,342 INFO L225 Difference]: With dead ends: 12248 [2023-12-15 19:09:20,343 INFO L226 Difference]: Without dead ends: 7398 [2023-12-15 19:09:20,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:20,365 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 409 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:20,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:09:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2023-12-15 19:09:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2023-12-15 19:09:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2023-12-15 19:09:20,499 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 191 [2023-12-15 19:09:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:20,500 INFO L495 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2023-12-15 19:09:20,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2023-12-15 19:09:20,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-15 19:09:20,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:20,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:09:20,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:09:20,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:20,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1212911604, now seen corresponding path program 1 times [2023-12-15 19:09:20,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:20,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767096959] [2023-12-15 19:09:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:09:20,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:20,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767096959] [2023-12-15 19:09:20,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767096959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:20,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187613112] [2023-12-15 19:09:20,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:20,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:20,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:20,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:20,762 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:22,484 INFO L93 Difference]: Finished difference Result 13480 states and 17130 transitions. [2023-12-15 19:09:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:22,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-15 19:09:22,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:22,518 INFO L225 Difference]: With dead ends: 13480 [2023-12-15 19:09:22,518 INFO L226 Difference]: Without dead ends: 8656 [2023-12-15 19:09:22,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:22,526 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 445 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:22,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 481 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:09:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2023-12-15 19:09:22,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 7377. [2023-12-15 19:09:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7376 states have (on average 1.247966377440347) internal successors, (9205), 7376 states have internal predecessors, (9205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9205 transitions. [2023-12-15 19:09:22,646 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9205 transitions. Word has length 204 [2023-12-15 19:09:22,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:22,646 INFO L495 AbstractCegarLoop]: Abstraction has 7377 states and 9205 transitions. [2023-12-15 19:09:22,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:22,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9205 transitions. [2023-12-15 19:09:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-15 19:09:22,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:22,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:22,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:09:22,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:22,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:22,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1211809152, now seen corresponding path program 1 times [2023-12-15 19:09:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:22,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866014731] [2023-12-15 19:09:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:22,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:22,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866014731] [2023-12-15 19:09:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866014731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581315999] [2023-12-15 19:09:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:22,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:22,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:22,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:22,877 INFO L87 Difference]: Start difference. First operand 7377 states and 9205 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:24,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:24,631 INFO L93 Difference]: Finished difference Result 19034 states and 23867 transitions. [2023-12-15 19:09:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:24,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2023-12-15 19:09:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:24,651 INFO L225 Difference]: With dead ends: 19034 [2023-12-15 19:09:24,652 INFO L226 Difference]: Without dead ends: 10806 [2023-12-15 19:09:24,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:24,663 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 370 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:24,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 893 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:09:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10806 states. [2023-12-15 19:09:24,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10806 to 10798. [2023-12-15 19:09:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10798 states, 10797 states have (on average 1.1794016856534222) internal successors, (12734), 10797 states have internal predecessors, (12734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10798 states to 10798 states and 12734 transitions. [2023-12-15 19:09:24,775 INFO L78 Accepts]: Start accepts. Automaton has 10798 states and 12734 transitions. Word has length 253 [2023-12-15 19:09:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:24,775 INFO L495 AbstractCegarLoop]: Abstraction has 10798 states and 12734 transitions. [2023-12-15 19:09:24,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 10798 states and 12734 transitions. [2023-12-15 19:09:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-15 19:09:24,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:24,778 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:24,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 19:09:24,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:24,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1999916796, now seen corresponding path program 1 times [2023-12-15 19:09:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845388036] [2023-12-15 19:09:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 210 proven. 70 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 19:09:24,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:24,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845388036] [2023-12-15 19:09:24,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845388036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:09:24,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514070622] [2023-12-15 19:09:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:24,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:09:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:09:24,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:09:24,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:09:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:25,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:09:25,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:09:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 210 proven. 70 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 19:09:25,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:09:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 19:09:25,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514070622] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:09:25,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:09:25,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-15 19:09:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594045675] [2023-12-15 19:09:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:25,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:09:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:09:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:09:25,723 INFO L87 Difference]: Start difference. First operand 10798 states and 12734 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:28,908 INFO L93 Difference]: Finished difference Result 35676 states and 42171 transitions. [2023-12-15 19:09:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:09:28,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 261 [2023-12-15 19:09:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:28,937 INFO L225 Difference]: With dead ends: 35676 [2023-12-15 19:09:28,937 INFO L226 Difference]: Without dead ends: 24018 [2023-12-15 19:09:28,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:09:28,950 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1085 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 1254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1254 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:28,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 141 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1254 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 19:09:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24018 states. [2023-12-15 19:09:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24018 to 22741. [2023-12-15 19:09:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22741 states, 22740 states have (on average 1.155321020228672) internal successors, (26272), 22740 states have internal predecessors, (26272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22741 states to 22741 states and 26272 transitions. [2023-12-15 19:09:29,193 INFO L78 Accepts]: Start accepts. Automaton has 22741 states and 26272 transitions. Word has length 261 [2023-12-15 19:09:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:29,194 INFO L495 AbstractCegarLoop]: Abstraction has 22741 states and 26272 transitions. [2023-12-15 19:09:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 22741 states and 26272 transitions. [2023-12-15 19:09:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-15 19:09:29,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:29,196 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:29,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:09:29,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:09:29,403 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:29,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2127945056, now seen corresponding path program 1 times [2023-12-15 19:09:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:29,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836020728] [2023-12-15 19:09:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:29,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-15 19:09:29,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:29,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836020728] [2023-12-15 19:09:29,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836020728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:29,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:29,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:29,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180151171] [2023-12-15 19:09:29,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:29,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:29,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:29,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:29,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:29,516 INFO L87 Difference]: Start difference. First operand 22741 states and 26272 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:31,055 INFO L93 Difference]: Finished difference Result 50582 states and 58591 transitions. [2023-12-15 19:09:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 274 [2023-12-15 19:09:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:31,092 INFO L225 Difference]: With dead ends: 50582 [2023-12-15 19:09:31,092 INFO L226 Difference]: Without dead ends: 27415 [2023-12-15 19:09:31,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:31,114 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 378 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:31,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 839 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:09:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27415 states. [2023-12-15 19:09:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27415 to 27415. [2023-12-15 19:09:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27415 states, 27414 states have (on average 1.1312103304880718) internal successors, (31011), 27414 states have internal predecessors, (31011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27415 states to 27415 states and 31011 transitions. [2023-12-15 19:09:31,469 INFO L78 Accepts]: Start accepts. Automaton has 27415 states and 31011 transitions. Word has length 274 [2023-12-15 19:09:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:31,469 INFO L495 AbstractCegarLoop]: Abstraction has 27415 states and 31011 transitions. [2023-12-15 19:09:31,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 27415 states and 31011 transitions. [2023-12-15 19:09:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 19:09:31,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:31,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 19:09:31,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:09:31,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:31,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash 774884790, now seen corresponding path program 1 times [2023-12-15 19:09:31,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:31,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372082503] [2023-12-15 19:09:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:31,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 232 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 19:09:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:31,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372082503] [2023-12-15 19:09:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372082503] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:09:31,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537384952] [2023-12-15 19:09:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:31,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:09:31,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:09:31,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:09:31,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:09:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:31,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:09:31,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:09:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 232 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 19:09:31,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:09:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 19:09:32,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537384952] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:09:32,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:09:32,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-15 19:09:32,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561946133] [2023-12-15 19:09:32,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:32,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:09:32,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:32,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:09:32,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:09:32,167 INFO L87 Difference]: Start difference. First operand 27415 states and 31011 transitions. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:34,653 INFO L93 Difference]: Finished difference Result 68480 states and 77436 transitions. [2023-12-15 19:09:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:09:34,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 332 [2023-12-15 19:09:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:34,726 INFO L225 Difference]: With dead ends: 68480 [2023-12-15 19:09:34,726 INFO L226 Difference]: Without dead ends: 40639 [2023-12-15 19:09:34,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:09:34,774 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 874 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:34,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 177 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 19:09:34,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40639 states. [2023-12-15 19:09:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40639 to 38511. [2023-12-15 19:09:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38511 states, 38510 states have (on average 1.133861334718255) internal successors, (43665), 38510 states have internal predecessors, (43665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38511 states to 38511 states and 43665 transitions. [2023-12-15 19:09:35,629 INFO L78 Accepts]: Start accepts. Automaton has 38511 states and 43665 transitions. Word has length 332 [2023-12-15 19:09:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:35,629 INFO L495 AbstractCegarLoop]: Abstraction has 38511 states and 43665 transitions. [2023-12-15 19:09:35,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 38511 states and 43665 transitions. [2023-12-15 19:09:35,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-15 19:09:35,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:35,637 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:35,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:09:35,842 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,SelfDestructingSolverStorable11 [2023-12-15 19:09:35,842 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:35,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:35,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1069669604, now seen corresponding path program 1 times [2023-12-15 19:09:35,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:35,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790246462] [2023-12-15 19:09:35,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:35,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-15 19:09:36,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:36,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790246462] [2023-12-15 19:09:36,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790246462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:36,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:36,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785081825] [2023-12-15 19:09:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:36,221 INFO L87 Difference]: Start difference. First operand 38511 states and 43665 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:37,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:37,912 INFO L93 Difference]: Finished difference Result 89784 states and 102266 transitions. [2023-12-15 19:09:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:37,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 432 [2023-12-15 19:09:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:37,969 INFO L225 Difference]: With dead ends: 89784 [2023-12-15 19:09:37,969 INFO L226 Difference]: Without dead ends: 49572 [2023-12-15 19:09:38,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:38,126 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 338 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:38,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 784 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:09:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49572 states. [2023-12-15 19:09:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49572 to 37618. [2023-12-15 19:09:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37618 states, 37617 states have (on average 1.1327325411383151) internal successors, (42610), 37617 states have internal predecessors, (42610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37618 states to 37618 states and 42610 transitions. [2023-12-15 19:09:38,495 INFO L78 Accepts]: Start accepts. Automaton has 37618 states and 42610 transitions. Word has length 432 [2023-12-15 19:09:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:38,496 INFO L495 AbstractCegarLoop]: Abstraction has 37618 states and 42610 transitions. [2023-12-15 19:09:38,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:38,496 INFO L276 IsEmpty]: Start isEmpty. Operand 37618 states and 42610 transitions. [2023-12-15 19:09:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-15 19:09:38,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:38,504 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-15 19:09:38,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 19:09:38,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:38,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash 482394593, now seen corresponding path program 1 times [2023-12-15 19:09:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986727404] [2023-12-15 19:09:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2023-12-15 19:09:38,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:38,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986727404] [2023-12-15 19:09:38,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986727404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:38,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:38,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:38,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029666728] [2023-12-15 19:09:38,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:38,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:38,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:38,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:38,945 INFO L87 Difference]: Start difference. First operand 37618 states and 42610 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:40,953 INFO L93 Difference]: Finished difference Result 87613 states and 98820 transitions. [2023-12-15 19:09:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 433 [2023-12-15 19:09:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:41,012 INFO L225 Difference]: With dead ends: 87613 [2023-12-15 19:09:41,012 INFO L226 Difference]: Without dead ends: 49570 [2023-12-15 19:09:41,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:41,038 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 453 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:41,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 346 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:09:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2023-12-15 19:09:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 38041. [2023-12-15 19:09:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38041 states, 38040 states have (on average 1.1311251314405888) internal successors, (43028), 38040 states have internal predecessors, (43028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38041 states to 38041 states and 43028 transitions. [2023-12-15 19:09:41,503 INFO L78 Accepts]: Start accepts. Automaton has 38041 states and 43028 transitions. Word has length 433 [2023-12-15 19:09:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:41,504 INFO L495 AbstractCegarLoop]: Abstraction has 38041 states and 43028 transitions. [2023-12-15 19:09:41,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 38041 states and 43028 transitions. [2023-12-15 19:09:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-15 19:09:41,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:41,512 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:41,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:09:41,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:41,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1814589054, now seen corresponding path program 1 times [2023-12-15 19:09:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:41,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266205009] [2023-12-15 19:09:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:41,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-15 19:09:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266205009] [2023-12-15 19:09:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266205009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:41,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455978805] [2023-12-15 19:09:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:41,808 INFO L87 Difference]: Start difference. First operand 38041 states and 43028 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:43,539 INFO L93 Difference]: Finished difference Result 90133 states and 101692 transitions. [2023-12-15 19:09:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:43,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 460 [2023-12-15 19:09:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:43,601 INFO L225 Difference]: With dead ends: 90133 [2023-12-15 19:09:43,601 INFO L226 Difference]: Without dead ends: 51667 [2023-12-15 19:09:43,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:43,627 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 488 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:43,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 297 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:09:43,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51667 states. [2023-12-15 19:09:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51667 to 38440. [2023-12-15 19:09:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38440 states, 38439 states have (on average 1.120554645021983) internal successors, (43073), 38439 states have internal predecessors, (43073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38440 states to 38440 states and 43073 transitions. [2023-12-15 19:09:44,081 INFO L78 Accepts]: Start accepts. Automaton has 38440 states and 43073 transitions. Word has length 460 [2023-12-15 19:09:44,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:44,082 INFO L495 AbstractCegarLoop]: Abstraction has 38440 states and 43073 transitions. [2023-12-15 19:09:44,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 38440 states and 43073 transitions. [2023-12-15 19:09:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-15 19:09:44,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:44,090 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:09:44,091 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:44,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 615180713, now seen corresponding path program 1 times [2023-12-15 19:09:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320459130] [2023-12-15 19:09:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:09:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320459130] [2023-12-15 19:09:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320459130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:44,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:44,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:09:44,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848439621] [2023-12-15 19:09:44,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:44,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:09:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:09:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:44,794 INFO L87 Difference]: Start difference. First operand 38440 states and 43073 transitions. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:46,981 INFO L93 Difference]: Finished difference Result 88378 states and 98834 transitions. [2023-12-15 19:09:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:09:46,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 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 472 [2023-12-15 19:09:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:47,033 INFO L225 Difference]: With dead ends: 88378 [2023-12-15 19:09:47,033 INFO L226 Difference]: Without dead ends: 49514 [2023-12-15 19:09:47,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:47,062 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 877 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:47,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 303 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:09:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49514 states. [2023-12-15 19:09:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49514 to 46099. [2023-12-15 19:09:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46099 states, 46098 states have (on average 1.1141698121393553) internal successors, (51361), 46098 states have internal predecessors, (51361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46099 states to 46099 states and 51361 transitions. [2023-12-15 19:09:47,523 INFO L78 Accepts]: Start accepts. Automaton has 46099 states and 51361 transitions. Word has length 472 [2023-12-15 19:09:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:47,536 INFO L495 AbstractCegarLoop]: Abstraction has 46099 states and 51361 transitions. [2023-12-15 19:09:47,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 46099 states and 51361 transitions. [2023-12-15 19:09:47,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-15 19:09:47,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:47,566 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:09:47,566 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:47,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash -119892235, now seen corresponding path program 1 times [2023-12-15 19:09:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562713395] [2023-12-15 19:09:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-15 19:09:48,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:48,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562713395] [2023-12-15 19:09:48,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562713395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:48,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:48,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:09:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053404221] [2023-12-15 19:09:48,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:48,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:09:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:09:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:48,079 INFO L87 Difference]: Start difference. First operand 46099 states and 51361 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:49,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:49,953 INFO L93 Difference]: Finished difference Result 99429 states and 110844 transitions. [2023-12-15 19:09:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:09:49,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 480 [2023-12-15 19:09:49,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:50,004 INFO L225 Difference]: With dead ends: 99429 [2023-12-15 19:09:50,005 INFO L226 Difference]: Without dead ends: 52905 [2023-12-15 19:09:50,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:09:50,018 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 474 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:50,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 254 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:09:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52905 states. [2023-12-15 19:09:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52905 to 49921. [2023-12-15 19:09:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49921 states, 49920 states have (on average 1.112540064102564) internal successors, (55538), 49920 states have internal predecessors, (55538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49921 states to 49921 states and 55538 transitions. [2023-12-15 19:09:50,609 INFO L78 Accepts]: Start accepts. Automaton has 49921 states and 55538 transitions. Word has length 480 [2023-12-15 19:09:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:50,609 INFO L495 AbstractCegarLoop]: Abstraction has 49921 states and 55538 transitions. [2023-12-15 19:09:50,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 49921 states and 55538 transitions. [2023-12-15 19:09:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-15 19:09:50,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:50,624 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:09:50,624 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:50,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1095902566, now seen corresponding path program 1 times [2023-12-15 19:09:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114810921] [2023-12-15 19:09:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-15 19:09:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114810921] [2023-12-15 19:09:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114810921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:51,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:09:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339256708] [2023-12-15 19:09:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:09:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:09:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:51,231 INFO L87 Difference]: Start difference. First operand 49921 states and 55538 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:54,321 INFO L93 Difference]: Finished difference Result 127551 states and 141062 transitions. [2023-12-15 19:09:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:09:54,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 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 481 [2023-12-15 19:09:54,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:54,410 INFO L225 Difference]: With dead ends: 127551 [2023-12-15 19:09:54,410 INFO L226 Difference]: Without dead ends: 73797 [2023-12-15 19:09:54,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:54,453 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 746 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:54,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 276 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 19:09:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73797 states. [2023-12-15 19:09:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73797 to 68226. [2023-12-15 19:09:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68226 states, 68225 states have (on average 1.1045511176255038) internal successors, (75358), 68225 states have internal predecessors, (75358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68226 states to 68226 states and 75358 transitions. [2023-12-15 19:09:55,316 INFO L78 Accepts]: Start accepts. Automaton has 68226 states and 75358 transitions. Word has length 481 [2023-12-15 19:09:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:55,316 INFO L495 AbstractCegarLoop]: Abstraction has 68226 states and 75358 transitions. [2023-12-15 19:09:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 68226 states and 75358 transitions. [2023-12-15 19:09:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-15 19:09:55,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:55,328 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:55,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:09:55,328 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:55,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash -343265053, now seen corresponding path program 1 times [2023-12-15 19:09:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127927063] [2023-12-15 19:09:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:55,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:09:56,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127927063] [2023-12-15 19:09:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127927063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:56,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:09:56,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273364096] [2023-12-15 19:09:56,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:56,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:09:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:09:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:56,133 INFO L87 Difference]: Start difference. First operand 68226 states and 75358 transitions. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:09:58,421 INFO L93 Difference]: Finished difference Result 144968 states and 159656 transitions. [2023-12-15 19:09:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:09:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 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 485 [2023-12-15 19:09:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:09:58,507 INFO L225 Difference]: With dead ends: 144968 [2023-12-15 19:09:58,507 INFO L226 Difference]: Without dead ends: 76318 [2023-12-15 19:09:58,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:58,547 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 645 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:09:58,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 345 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 19:09:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76318 states. [2023-12-15 19:09:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76318 to 70351. [2023-12-15 19:09:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70351 states, 70350 states have (on average 1.1027007818052594) internal successors, (77575), 70350 states have internal predecessors, (77575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70351 states to 70351 states and 77575 transitions. [2023-12-15 19:09:59,424 INFO L78 Accepts]: Start accepts. Automaton has 70351 states and 77575 transitions. Word has length 485 [2023-12-15 19:09:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:09:59,424 INFO L495 AbstractCegarLoop]: Abstraction has 70351 states and 77575 transitions. [2023-12-15 19:09:59,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:09:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 70351 states and 77575 transitions. [2023-12-15 19:09:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-15 19:09:59,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:09:59,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:09:59,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 19:09:59,436 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:09:59,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:09:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash -75131185, now seen corresponding path program 1 times [2023-12-15 19:09:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:09:59,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308055133] [2023-12-15 19:09:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:09:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:09:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:09:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:09:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:09:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308055133] [2023-12-15 19:09:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308055133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:09:59,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:09:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:09:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147386751] [2023-12-15 19:09:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:09:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:09:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:09:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:09:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:09:59,978 INFO L87 Difference]: Start difference. First operand 70351 states and 77575 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:02,916 INFO L93 Difference]: Finished difference Result 165421 states and 181961 transitions. [2023-12-15 19:10:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:10:02,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 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 493 [2023-12-15 19:10:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:03,015 INFO L225 Difference]: With dead ends: 165421 [2023-12-15 19:10:03,015 INFO L226 Difference]: Without dead ends: 95071 [2023-12-15 19:10:03,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:10:03,064 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 645 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:03,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 164 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 19:10:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95071 states. [2023-12-15 19:10:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95071 to 91233. [2023-12-15 19:10:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91233 states, 91232 states have (on average 1.097334268677657) internal successors, (100112), 91232 states have internal predecessors, (100112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91233 states to 91233 states and 100112 transitions. [2023-12-15 19:10:04,265 INFO L78 Accepts]: Start accepts. Automaton has 91233 states and 100112 transitions. Word has length 493 [2023-12-15 19:10:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:04,266 INFO L495 AbstractCegarLoop]: Abstraction has 91233 states and 100112 transitions. [2023-12-15 19:10:04,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 91233 states and 100112 transitions. [2023-12-15 19:10:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-15 19:10:04,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:04,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 19:10:04,281 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:04,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1173360167, now seen corresponding path program 1 times [2023-12-15 19:10:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:04,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119191925] [2023-12-15 19:10:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-15 19:10:04,602 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:10:04,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 19:10:04,607 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-15 19:10:04,610 INFO L158 Benchmark]: Toolchain (without parser) took 61919.54ms. Allocated memory was 345.0MB in the beginning and 4.6GB in the end (delta: 4.2GB). Free memory was 281.6MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 19:10:04,611 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 215.0MB. Free memory is still 165.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:10:04,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 979.69ms. Allocated memory is still 345.0MB. Free memory was 281.6MB in the beginning and 280.6MB in the end (delta: 1.0MB). Peak memory consumption was 73.6MB. Max. memory is 8.0GB. [2023-12-15 19:10:04,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 195.62ms. Allocated memory is still 345.0MB. Free memory was 280.6MB in the beginning and 218.2MB in the end (delta: 62.4MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2023-12-15 19:10:04,612 INFO L158 Benchmark]: Boogie Preprocessor took 542.52ms. Allocated memory was 345.0MB in the beginning and 690.0MB in the end (delta: 345.0MB). Free memory was 218.2MB in the beginning and 583.8MB in the end (delta: -365.7MB). Peak memory consumption was 73.7MB. Max. memory is 8.0GB. [2023-12-15 19:10:04,615 INFO L158 Benchmark]: RCFGBuilder took 2610.05ms. Allocated memory was 690.0MB in the beginning and 1.1GB in the end (delta: 456.1MB). Free memory was 583.8MB in the beginning and 971.8MB in the end (delta: -388.0MB). Peak memory consumption was 163.6MB. Max. memory is 8.0GB. [2023-12-15 19:10:04,615 INFO L158 Benchmark]: TraceAbstraction took 57584.24ms. Allocated memory was 1.1GB in the beginning and 4.6GB in the end (delta: 3.4GB). Free memory was 970.8MB in the beginning and 2.8GB in the end (delta: -1.9GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 19:10:04,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 215.0MB. Free memory is still 165.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 979.69ms. Allocated memory is still 345.0MB. Free memory was 281.6MB in the beginning and 280.6MB in the end (delta: 1.0MB). Peak memory consumption was 73.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 195.62ms. Allocated memory is still 345.0MB. Free memory was 280.6MB in the beginning and 218.2MB in the end (delta: 62.4MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 542.52ms. Allocated memory was 345.0MB in the beginning and 690.0MB in the end (delta: 345.0MB). Free memory was 218.2MB in the beginning and 583.8MB in the end (delta: -365.7MB). Peak memory consumption was 73.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2610.05ms. Allocated memory was 690.0MB in the beginning and 1.1GB in the end (delta: 456.1MB). Free memory was 583.8MB in the beginning and 971.8MB in the end (delta: -388.0MB). Peak memory consumption was 163.6MB. Max. memory is 8.0GB. * TraceAbstraction took 57584.24ms. Allocated memory was 1.1GB in the beginning and 4.6GB in the end (delta: 3.4GB). Free memory was 970.8MB in the beginning and 2.8GB in the end (delta: -1.9GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:304) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown