/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 15:02:38,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 15:02:38,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 15:02:38,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 15:02:38,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 15:02:38,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 15:02:38,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 15:02:38,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 15:02:38,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 15:02:38,367 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 15:02:38,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 15:02:38,368 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 15:02:38,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 15:02:38,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 15:02:38,370 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 15:02:38,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 15:02:38,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 15:02:38,371 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 15:02:38,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 15:02:38,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 15:02:38,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 15:02:38,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 15:02:38,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 15:02:38,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 15:02:38,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 15:02:38,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 15:02:38,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 15:02:38,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 15:02:38,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 15:02:38,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 15:02:38,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 15:02:38,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 15:02:38,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 15:02:38,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 15:02:38,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 15:02:38,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 15:02:38,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 15:02:38,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 15:02:38,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 15:02:38,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 15:02:38,377 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 15:02:38,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 15:02:38,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 15:02:38,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 15:02:38,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 15:02:38,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 15:02:38,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 15:02:38,640 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 15:02:38,644 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 15:02:38,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2023-12-20 15:02:39,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 15:02:40,088 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 15:02:40,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2023-12-20 15:02:40,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1eacabe5/fe6e83eeaafb4880b7257da12a9212a3/FLAG5215b5d61 [2023-12-20 15:02:40,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1eacabe5/fe6e83eeaafb4880b7257da12a9212a3 [2023-12-20 15:02:40,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 15:02:40,129 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 15:02:40,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 15:02:40,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 15:02:40,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 15:02:40,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:40,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2117abe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40, skipping insertion in model container [2023-12-20 15:02:40,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:40,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 15:02:40,712 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/Problem03_label05.c[55544,55557] [2023-12-20 15:02:40,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 15:02:40,790 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 15:02:40,954 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/Problem03_label05.c[55544,55557] [2023-12-20 15:02:40,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 15:02:40,985 INFO L206 MainTranslator]: Completed translation [2023-12-20 15:02:40,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40 WrapperNode [2023-12-20 15:02:40,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 15:02:40,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 15:02:40,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 15:02:40,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 15:02:40,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,114 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-20 15:02:41,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 15:02:41,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 15:02:41,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 15:02:41,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 15:02:41,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,174 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]. [2023-12-20 15:02:41,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 15:02:41,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 15:02:41,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 15:02:41,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 15:02:41,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (1/1) ... [2023-12-20 15:02:41,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 15:02:41,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:02:41,289 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) [2023-12-20 15:02:41,313 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 [2023-12-20 15:02:41,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 15:02:41,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 15:02:41,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 15:02:41,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 15:02:41,422 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 15:02:41,424 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 15:02:42,939 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 15:02:43,001 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 15:02:43,001 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 15:02:43,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:02:43 BoogieIcfgContainer [2023-12-20 15:02:43,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 15:02:43,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 15:02:43,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 15:02:43,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 15:02:43,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:02:40" (1/3) ... [2023-12-20 15:02:43,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14656a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:02:43, skipping insertion in model container [2023-12-20 15:02:43,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:02:40" (2/3) ... [2023-12-20 15:02:43,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14656a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:02:43, skipping insertion in model container [2023-12-20 15:02:43,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:02:43" (3/3) ... [2023-12-20 15:02:43,043 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label05.c [2023-12-20 15:02:43,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 15:02:43,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 15:02:43,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 15:02:43,114 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;@5ab9a5a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 15:02:43,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 15:02:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 15:02:43,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:43,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:43,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:43,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1243830075, now seen corresponding path program 1 times [2023-12-20 15:02:43,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22310576] [2023-12-20 15:02:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:02:43,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22310576] [2023-12-20 15:02:43,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22310576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:43,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:43,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:43,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132357845] [2023-12-20 15:02:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:43,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 15:02:43,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 15:02:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 15:02:43,635 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:43,685 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-20 15:02:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 15:02:43,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2023-12-20 15:02:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:43,702 INFO L225 Difference]: With dead ends: 479 [2023-12-20 15:02:43,702 INFO L226 Difference]: Without dead ends: 238 [2023-12-20 15:02:43,706 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 [2023-12-20 15:02:43,711 INFO L413 NwaCegarLoop]: 392 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, 392 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 [2023-12-20 15:02:43,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 15:02:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-20 15:02:43,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-20 15:02:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-20 15:02:43,772 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 157 [2023-12-20 15:02:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:43,774 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-20 15:02:43,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-20 15:02:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 15:02:43,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:43,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:43,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 15:02:43,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:43,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1975721656, now seen corresponding path program 1 times [2023-12-20 15:02:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:43,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546385265] [2023-12-20 15:02:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:02:44,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:44,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546385265] [2023-12-20 15:02:44,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546385265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:44,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:44,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:44,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568601394] [2023-12-20 15:02:44,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:44,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:44,144 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:45,090 INFO L93 Difference]: Finished difference Result 699 states and 1160 transitions. [2023-12-20 15:02:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:45,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2023-12-20 15:02:45,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:45,094 INFO L225 Difference]: With dead ends: 699 [2023-12-20 15:02:45,094 INFO L226 Difference]: Without dead ends: 462 [2023-12-20 15:02:45,095 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 [2023-12-20 15:02:45,096 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 99 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:45,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 15:02:45,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-20 15:02:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 448. [2023-12-20 15:02:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.6196868008948546) internal successors, (724), 447 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 724 transitions. [2023-12-20 15:02:45,130 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 724 transitions. Word has length 157 [2023-12-20 15:02:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:45,131 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 724 transitions. [2023-12-20 15:02:45,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 724 transitions. [2023-12-20 15:02:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 15:02:45,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:45,134 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 15:02:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 15:02:45,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:45,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1176943884, now seen corresponding path program 1 times [2023-12-20 15:02:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061321936] [2023-12-20 15:02:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:02:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:45,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061321936] [2023-12-20 15:02:45,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061321936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:45,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:45,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380895600] [2023-12-20 15:02:45,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:45,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:45,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:45,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:45,471 INFO L87 Difference]: Start difference. First operand 448 states and 724 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:46,156 INFO L93 Difference]: Finished difference Result 1318 states and 2137 transitions. [2023-12-20 15:02:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:46,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-20 15:02:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:46,159 INFO L225 Difference]: With dead ends: 1318 [2023-12-20 15:02:46,160 INFO L226 Difference]: Without dead ends: 871 [2023-12-20 15:02:46,161 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 [2023-12-20 15:02:46,162 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:46,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 148 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:02:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-20 15:02:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2023-12-20 15:02:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.512672811059908) internal successors, (1313), 868 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1313 transitions. [2023-12-20 15:02:46,200 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1313 transitions. Word has length 162 [2023-12-20 15:02:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:46,200 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1313 transitions. [2023-12-20 15:02:46,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1313 transitions. [2023-12-20 15:02:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 15:02:46,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:46,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2023-12-20 15:02:46,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 15:02:46,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:46,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash -666682626, now seen corresponding path program 1 times [2023-12-20 15:02:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:46,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216353876] [2023-12-20 15:02:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 15:02:46,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216353876] [2023-12-20 15:02:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216353876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:46,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:46,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:02:46,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270336235] [2023-12-20 15:02:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:46,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:46,455 INFO L87 Difference]: Start difference. First operand 869 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:47,101 INFO L93 Difference]: Finished difference Result 2553 states and 3868 transitions. [2023-12-20 15:02:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:47,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 177 [2023-12-20 15:02:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:47,108 INFO L225 Difference]: With dead ends: 2553 [2023-12-20 15:02:47,108 INFO L226 Difference]: Without dead ends: 1685 [2023-12-20 15:02:47,110 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 [2023-12-20 15:02:47,111 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 233 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:47,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 413 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:02:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-12-20 15:02:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1683. [2023-12-20 15:02:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3370986920332937) internal successors, (2249), 1682 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2249 transitions. [2023-12-20 15:02:47,164 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2249 transitions. Word has length 177 [2023-12-20 15:02:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:47,164 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2249 transitions. [2023-12-20 15:02:47,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2249 transitions. [2023-12-20 15:02:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 15:02:47,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:47,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:47,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 15:02:47,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:47,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:47,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1844237151, now seen corresponding path program 1 times [2023-12-20 15:02:47,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567554456] [2023-12-20 15:02:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:47,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:02:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567554456] [2023-12-20 15:02:47,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567554456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:47,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:47,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957655748] [2023-12-20 15:02:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:47,419 INFO L87 Difference]: Start difference. First operand 1683 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:48,157 INFO L93 Difference]: Finished difference Result 5016 states and 6709 transitions. [2023-12-20 15:02:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2023-12-20 15:02:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:48,168 INFO L225 Difference]: With dead ends: 5016 [2023-12-20 15:02:48,169 INFO L226 Difference]: Without dead ends: 3334 [2023-12-20 15:02:48,171 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 [2023-12-20 15:02:48,172 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:48,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 121 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:02:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-12-20 15:02:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3325. [2023-12-20 15:02:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 1.3237063778580025) internal successors, (4400), 3324 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4400 transitions. [2023-12-20 15:02:48,232 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4400 transitions. Word has length 180 [2023-12-20 15:02:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:48,232 INFO L495 AbstractCegarLoop]: Abstraction has 3325 states and 4400 transitions. [2023-12-20 15:02:48,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4400 transitions. [2023-12-20 15:02:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-20 15:02:48,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:48,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:48,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 15:02:48,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:48,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1871193667, now seen corresponding path program 1 times [2023-12-20 15:02:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:48,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897016772] [2023-12-20 15:02:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:48,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:02:48,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:48,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897016772] [2023-12-20 15:02:48,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897016772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:48,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:48,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:48,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882184839] [2023-12-20 15:02:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:48,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:48,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:48,488 INFO L87 Difference]: Start difference. First operand 3325 states and 4400 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:49,180 INFO L93 Difference]: Finished difference Result 9925 states and 13149 transitions. [2023-12-20 15:02:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:49,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2023-12-20 15:02:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:49,201 INFO L225 Difference]: With dead ends: 9925 [2023-12-20 15:02:49,201 INFO L226 Difference]: Without dead ends: 6601 [2023-12-20 15:02:49,207 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 [2023-12-20 15:02:49,207 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 217 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:49,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 166 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:02:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6601 states. [2023-12-20 15:02:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6601 to 5767. [2023-12-20 15:02:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.3371488033298646) internal successors, (7710), 5766 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7710 transitions. [2023-12-20 15:02:49,329 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7710 transitions. Word has length 183 [2023-12-20 15:02:49,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:49,329 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 7710 transitions. [2023-12-20 15:02:49,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7710 transitions. [2023-12-20 15:02:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-20 15:02:49,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:49,339 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:49,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 15:02:49,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:49,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash -707649173, now seen corresponding path program 1 times [2023-12-20 15:02:49,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:49,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656933550] [2023-12-20 15:02:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:49,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 15:02:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656933550] [2023-12-20 15:02:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656933550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35717571] [2023-12-20 15:02:49,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:49,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:49,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:49,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:49,744 INFO L87 Difference]: Start difference. First operand 5767 states and 7710 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:50,513 INFO L93 Difference]: Finished difference Result 15633 states and 21104 transitions. [2023-12-20 15:02:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 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 192 [2023-12-20 15:02:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:50,546 INFO L225 Difference]: With dead ends: 15633 [2023-12-20 15:02:50,546 INFO L226 Difference]: Without dead ends: 9867 [2023-12-20 15:02:50,555 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 [2023-12-20 15:02:50,556 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:50,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 186 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:02:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2023-12-20 15:02:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 9642. [2023-12-20 15:02:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9642 states, 9641 states have (on average 1.3567057359195105) internal successors, (13080), 9641 states have internal predecessors, (13080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9642 states to 9642 states and 13080 transitions. [2023-12-20 15:02:50,828 INFO L78 Accepts]: Start accepts. Automaton has 9642 states and 13080 transitions. Word has length 192 [2023-12-20 15:02:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:50,828 INFO L495 AbstractCegarLoop]: Abstraction has 9642 states and 13080 transitions. [2023-12-20 15:02:50,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 9642 states and 13080 transitions. [2023-12-20 15:02:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-20 15:02:50,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:50,840 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:50,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 15:02:50,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:50,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:50,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1505431548, now seen corresponding path program 1 times [2023-12-20 15:02:50,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:50,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946415490] [2023-12-20 15:02:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:50,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:02:51,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946415490] [2023-12-20 15:02:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946415490] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:02:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329833120] [2023-12-20 15:02:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:51,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:02:51,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:02:51,172 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) [2023-12-20 15:02:51,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 15:02:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:51,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 15:02:51,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:02:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 15:02:51,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:02:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329833120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:51,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:02:51,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 15:02:51,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793906439] [2023-12-20 15:02:51,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:51,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:51,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:51,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:02:51,533 INFO L87 Difference]: Start difference. First operand 9642 states and 13080 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:52,376 INFO L93 Difference]: Finished difference Result 24979 states and 34054 transitions. [2023-12-20 15:02:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:52,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 195 [2023-12-20 15:02:52,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:52,426 INFO L225 Difference]: With dead ends: 24979 [2023-12-20 15:02:52,427 INFO L226 Difference]: Without dead ends: 15745 [2023-12-20 15:02:52,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:02:52,444 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 85 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:52,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 423 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:02:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15745 states. [2023-12-20 15:02:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15745 to 15735. [2023-12-20 15:02:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15735 states, 15734 states have (on average 1.3226134485826873) internal successors, (20810), 15734 states have internal predecessors, (20810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15735 states to 15735 states and 20810 transitions. [2023-12-20 15:02:52,722 INFO L78 Accepts]: Start accepts. Automaton has 15735 states and 20810 transitions. Word has length 195 [2023-12-20 15:02:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:52,722 INFO L495 AbstractCegarLoop]: Abstraction has 15735 states and 20810 transitions. [2023-12-20 15:02:52,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15735 states and 20810 transitions. [2023-12-20 15:02:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-20 15:02:52,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:52,740 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:52,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 15:02:52,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:02:52,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:52,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1306950348, now seen corresponding path program 1 times [2023-12-20 15:02:52,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:52,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450478486] [2023-12-20 15:02:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 15:02:53,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:53,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450478486] [2023-12-20 15:02:53,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450478486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:53,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:53,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456871990] [2023-12-20 15:02:53,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:53,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:53,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:53,375 INFO L87 Difference]: Start difference. First operand 15735 states and 20810 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:54,173 INFO L93 Difference]: Finished difference Result 35948 states and 47614 transitions. [2023-12-20 15:02:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:54,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 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 202 [2023-12-20 15:02:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:54,212 INFO L225 Difference]: With dead ends: 35948 [2023-12-20 15:02:54,213 INFO L226 Difference]: Without dead ends: 20214 [2023-12-20 15:02:54,232 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 [2023-12-20 15:02:54,234 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:54,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 171 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:02:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20214 states. [2023-12-20 15:02:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20214 to 20201. [2023-12-20 15:02:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20201 states, 20200 states have (on average 1.30509900990099) internal successors, (26363), 20200 states have internal predecessors, (26363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20201 states to 20201 states and 26363 transitions. [2023-12-20 15:02:54,593 INFO L78 Accepts]: Start accepts. Automaton has 20201 states and 26363 transitions. Word has length 202 [2023-12-20 15:02:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:54,593 INFO L495 AbstractCegarLoop]: Abstraction has 20201 states and 26363 transitions. [2023-12-20 15:02:54,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 20201 states and 26363 transitions. [2023-12-20 15:02:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-20 15:02:54,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:54,616 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 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] [2023-12-20 15:02:54,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 15:02:54,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:54,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 344506857, now seen corresponding path program 1 times [2023-12-20 15:02:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:54,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935564741] [2023-12-20 15:02:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:54,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 15:02:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935564741] [2023-12-20 15:02:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935564741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:54,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:02:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055260789] [2023-12-20 15:02:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:54,888 INFO L87 Difference]: Start difference. First operand 20201 states and 26363 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:55,699 INFO L93 Difference]: Finished difference Result 42036 states and 54659 transitions. [2023-12-20 15:02:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:55,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 205 [2023-12-20 15:02:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:55,742 INFO L225 Difference]: With dead ends: 42036 [2023-12-20 15:02:55,742 INFO L226 Difference]: Without dead ends: 22446 [2023-12-20 15:02:55,765 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 [2023-12-20 15:02:55,765 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 202 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:55,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 420 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:02:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22446 states. [2023-12-20 15:02:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22446 to 22442. [2023-12-20 15:02:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22442 states, 22441 states have (on average 1.2857715788066486) internal successors, (28854), 22441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22442 states to 22442 states and 28854 transitions. [2023-12-20 15:02:56,119 INFO L78 Accepts]: Start accepts. Automaton has 22442 states and 28854 transitions. Word has length 205 [2023-12-20 15:02:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:56,119 INFO L495 AbstractCegarLoop]: Abstraction has 22442 states and 28854 transitions. [2023-12-20 15:02:56,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 22442 states and 28854 transitions. [2023-12-20 15:02:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 15:02:56,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:56,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 15:02:56,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 15:02:56,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:56,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1513894693, now seen corresponding path program 1 times [2023-12-20 15:02:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:56,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916167262] [2023-12-20 15:02:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 15:02:56,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:56,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916167262] [2023-12-20 15:02:56,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916167262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:02:56,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998092451] [2023-12-20 15:02:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:56,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:02:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:02:56,569 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) [2023-12-20 15:02:56,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 15:02:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:56,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:02:56,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:02:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 15:02:56,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:02:56,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998092451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:56,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:02:56,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-20 15:02:56,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995113207] [2023-12-20 15:02:56,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:56,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:56,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:02:56,823 INFO L87 Difference]: Start difference. First operand 22442 states and 28854 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:57,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:02:57,670 INFO L93 Difference]: Finished difference Result 58312 states and 75047 transitions. [2023-12-20 15:02:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:02:57,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 209 [2023-12-20 15:02:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:02:57,729 INFO L225 Difference]: With dead ends: 58312 [2023-12-20 15:02:57,729 INFO L226 Difference]: Without dead ends: 36074 [2023-12-20 15:02:57,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:02:57,756 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 233 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:02:57,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 159 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:02:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36074 states. [2023-12-20 15:02:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36074 to 34852. [2023-12-20 15:02:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34852 states, 34851 states have (on average 1.259332587300221) internal successors, (43889), 34851 states have internal predecessors, (43889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34852 states to 34852 states and 43889 transitions. [2023-12-20 15:02:58,315 INFO L78 Accepts]: Start accepts. Automaton has 34852 states and 43889 transitions. Word has length 209 [2023-12-20 15:02:58,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:02:58,315 INFO L495 AbstractCegarLoop]: Abstraction has 34852 states and 43889 transitions. [2023-12-20 15:02:58,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:02:58,316 INFO L276 IsEmpty]: Start isEmpty. Operand 34852 states and 43889 transitions. [2023-12-20 15:02:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-20 15:02:58,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:02:58,351 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:02:58,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 15:02:58,558 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,SelfDestructingSolverStorable10 [2023-12-20 15:02:58,559 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:02:58,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:02:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1787594038, now seen corresponding path program 1 times [2023-12-20 15:02:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:02:58,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646420747] [2023-12-20 15:02:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:02:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:02:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:02:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 15:02:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:02:59,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646420747] [2023-12-20 15:02:59,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646420747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:02:59,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:02:59,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:02:59,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340034299] [2023-12-20 15:02:59,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:02:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:02:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:02:59,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:02:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:02:59,018 INFO L87 Difference]: Start difference. First operand 34852 states and 43889 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:00,025 INFO L93 Difference]: Finished difference Result 76643 states and 96208 transitions. [2023-12-20 15:03:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:00,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2023-12-20 15:03:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:00,085 INFO L225 Difference]: With dead ends: 76643 [2023-12-20 15:03:00,086 INFO L226 Difference]: Without dead ends: 42605 [2023-12-20 15:03:00,117 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 [2023-12-20 15:03:00,118 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:00,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 200 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 15:03:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42605 states. [2023-12-20 15:03:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42605 to 42591. [2023-12-20 15:03:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42591 states, 42590 states have (on average 1.2447757689598498) internal successors, (53015), 42590 states have internal predecessors, (53015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42591 states to 42591 states and 53015 transitions. [2023-12-20 15:03:00,775 INFO L78 Accepts]: Start accepts. Automaton has 42591 states and 53015 transitions. Word has length 217 [2023-12-20 15:03:00,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:00,776 INFO L495 AbstractCegarLoop]: Abstraction has 42591 states and 53015 transitions. [2023-12-20 15:03:00,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 42591 states and 53015 transitions. [2023-12-20 15:03:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-20 15:03:00,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:00,824 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2023-12-20 15:03:00,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 15:03:00,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:00,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 661395237, now seen corresponding path program 1 times [2023-12-20 15:03:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005244124] [2023-12-20 15:03:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 15:03:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:01,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005244124] [2023-12-20 15:03:01,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005244124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487927136] [2023-12-20 15:03:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:01,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:01,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:01,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:01,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 15:03:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:01,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:03:01,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 15:03:01,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:01,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487927136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:01,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:01,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 15:03:01,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168852009] [2023-12-20 15:03:01,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:01,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:01,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:01,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:03:01,541 INFO L87 Difference]: Start difference. First operand 42591 states and 53015 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:02,561 INFO L93 Difference]: Finished difference Result 100205 states and 126849 transitions. [2023-12-20 15:03:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:02,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 224 [2023-12-20 15:03:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:02,628 INFO L225 Difference]: With dead ends: 100205 [2023-12-20 15:03:02,628 INFO L226 Difference]: Without dead ends: 58428 [2023-12-20 15:03:02,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:03:02,644 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:02,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 169 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:03:02,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58428 states. [2023-12-20 15:03:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58428 to 58019. [2023-12-20 15:03:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58019 states, 58018 states have (on average 1.205453479954497) internal successors, (69938), 58018 states have internal predecessors, (69938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58019 states to 58019 states and 69938 transitions. [2023-12-20 15:03:03,429 INFO L78 Accepts]: Start accepts. Automaton has 58019 states and 69938 transitions. Word has length 224 [2023-12-20 15:03:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 58019 states and 69938 transitions. [2023-12-20 15:03:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 58019 states and 69938 transitions. [2023-12-20 15:03:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-20 15:03:03,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:03,462 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-20 15:03:03,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 15:03:03,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:03,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:03,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:03,673 INFO L85 PathProgramCache]: Analyzing trace with hash -243626039, now seen corresponding path program 1 times [2023-12-20 15:03:03,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:03,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938171477] [2023-12-20 15:03:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-20 15:03:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938171477] [2023-12-20 15:03:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938171477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:04,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:04,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:03:04,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916010538] [2023-12-20 15:03:04,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:04,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:04,080 INFO L87 Difference]: Start difference. First operand 58019 states and 69938 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:05,076 INFO L93 Difference]: Finished difference Result 121137 states and 146003 transitions. [2023-12-20 15:03:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 228 [2023-12-20 15:03:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:05,158 INFO L225 Difference]: With dead ends: 121137 [2023-12-20 15:03:05,158 INFO L226 Difference]: Without dead ends: 63932 [2023-12-20 15:03:05,306 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 [2023-12-20 15:03:05,307 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 214 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:05,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 399 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:03:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63932 states. [2023-12-20 15:03:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63932 to 54565. [2023-12-20 15:03:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54565 states, 54564 states have (on average 1.2010849644454218) internal successors, (65536), 54564 states have internal predecessors, (65536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54565 states to 54565 states and 65536 transitions. [2023-12-20 15:03:06,230 INFO L78 Accepts]: Start accepts. Automaton has 54565 states and 65536 transitions. Word has length 228 [2023-12-20 15:03:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:06,230 INFO L495 AbstractCegarLoop]: Abstraction has 54565 states and 65536 transitions. [2023-12-20 15:03:06,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 54565 states and 65536 transitions. [2023-12-20 15:03:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-20 15:03:06,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:06,269 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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] [2023-12-20 15:03:06,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 15:03:06,270 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:06,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash -219616895, now seen corresponding path program 1 times [2023-12-20 15:03:06,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:06,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708616905] [2023-12-20 15:03:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 15:03:06,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708616905] [2023-12-20 15:03:06,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708616905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:06,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383001539] [2023-12-20 15:03:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:06,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:06,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:06,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 15:03:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:06,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:03:06,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-20 15:03:06,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383001539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 15:03:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843348325] [2023-12-20 15:03:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:06,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:06,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:06,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:03:06,946 INFO L87 Difference]: Start difference. First operand 54565 states and 65536 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:07,757 INFO L93 Difference]: Finished difference Result 108114 states and 129932 transitions. [2023-12-20 15:03:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:07,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 244 [2023-12-20 15:03:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:07,827 INFO L225 Difference]: With dead ends: 108114 [2023-12-20 15:03:07,827 INFO L226 Difference]: Without dead ends: 54363 [2023-12-20 15:03:07,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:03:07,865 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 257 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:07,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 97 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 15:03:07,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54363 states. [2023-12-20 15:03:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54363 to 54360. [2023-12-20 15:03:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54360 states, 54359 states have (on average 1.186942364649828) internal successors, (64521), 54359 states have internal predecessors, (64521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54360 states to 54360 states and 64521 transitions. [2023-12-20 15:03:08,627 INFO L78 Accepts]: Start accepts. Automaton has 54360 states and 64521 transitions. Word has length 244 [2023-12-20 15:03:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:08,628 INFO L495 AbstractCegarLoop]: Abstraction has 54360 states and 64521 transitions. [2023-12-20 15:03:08,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 54360 states and 64521 transitions. [2023-12-20 15:03:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-20 15:03:08,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:08,674 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, 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, 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] [2023-12-20 15:03:08,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:08,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 15:03:08,887 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:08,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1558801661, now seen corresponding path program 1 times [2023-12-20 15:03:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:08,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989965675] [2023-12-20 15:03:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:08,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:03:09,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:09,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989965675] [2023-12-20 15:03:09,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989965675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:09,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:03:09,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229301731] [2023-12-20 15:03:09,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:09,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:09,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:09,394 INFO L87 Difference]: Start difference. First operand 54360 states and 64521 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:10,361 INFO L93 Difference]: Finished difference Result 115243 states and 136568 transitions. [2023-12-20 15:03:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 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 283 [2023-12-20 15:03:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:10,430 INFO L225 Difference]: With dead ends: 115243 [2023-12-20 15:03:10,430 INFO L226 Difference]: Without dead ends: 61697 [2023-12-20 15:03:10,462 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 [2023-12-20 15:03:10,462 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 106 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:10,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 196 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:03:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61697 states. [2023-12-20 15:03:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61697 to 61692. [2023-12-20 15:03:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61692 states, 61691 states have (on average 1.1803342464865216) internal successors, (72816), 61691 states have internal predecessors, (72816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61692 states to 61692 states and 72816 transitions. [2023-12-20 15:03:11,382 INFO L78 Accepts]: Start accepts. Automaton has 61692 states and 72816 transitions. Word has length 283 [2023-12-20 15:03:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:11,382 INFO L495 AbstractCegarLoop]: Abstraction has 61692 states and 72816 transitions. [2023-12-20 15:03:11,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:11,388 INFO L276 IsEmpty]: Start isEmpty. Operand 61692 states and 72816 transitions. [2023-12-20 15:03:11,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-20 15:03:11,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:11,428 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 15:03:11,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 15:03:11,429 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:11,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:11,429 INFO L85 PathProgramCache]: Analyzing trace with hash -319787726, now seen corresponding path program 1 times [2023-12-20 15:03:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:11,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273544895] [2023-12-20 15:03:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:11,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:03:12,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273544895] [2023-12-20 15:03:12,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273544895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:12,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063551121] [2023-12-20 15:03:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:12,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:12,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 15:03:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:12,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 15:03:12,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:03:13,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063551121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:13,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 15:03:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612234816] [2023-12-20 15:03:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:03:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:03:13,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 15:03:13,261 INFO L87 Difference]: Start difference. First operand 61692 states and 72816 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:14,455 INFO L93 Difference]: Finished difference Result 132121 states and 155451 transitions. [2023-12-20 15:03:14,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:03:14,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2023-12-20 15:03:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:14,527 INFO L225 Difference]: With dead ends: 132121 [2023-12-20 15:03:14,528 INFO L226 Difference]: Without dead ends: 71649 [2023-12-20 15:03:14,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 15:03:14,547 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 418 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:14,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 183 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 15:03:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71649 states. [2023-12-20 15:03:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71649 to 69203. [2023-12-20 15:03:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69203 states, 69202 states have (on average 1.1624375018063062) internal successors, (80443), 69202 states have internal predecessors, (80443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69203 states to 69203 states and 80443 transitions. [2023-12-20 15:03:15,301 INFO L78 Accepts]: Start accepts. Automaton has 69203 states and 80443 transitions. Word has length 290 [2023-12-20 15:03:15,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:15,301 INFO L495 AbstractCegarLoop]: Abstraction has 69203 states and 80443 transitions. [2023-12-20 15:03:15,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 69203 states and 80443 transitions. [2023-12-20 15:03:15,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-20 15:03:15,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:15,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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] [2023-12-20 15:03:15,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:15,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 15:03:15,547 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:15,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1773461167, now seen corresponding path program 1 times [2023-12-20 15:03:15,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455214973] [2023-12-20 15:03:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 15:03:16,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:16,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455214973] [2023-12-20 15:03:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455214973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:16,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:03:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812654066] [2023-12-20 15:03:16,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:16,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:03:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:03:16,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:16,077 INFO L87 Difference]: Start difference. First operand 69203 states and 80443 transitions. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:17,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:17,058 INFO L93 Difference]: Finished difference Result 121497 states and 141152 transitions. [2023-12-20 15:03:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:03:17,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 298 [2023-12-20 15:03:17,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:17,115 INFO L225 Difference]: With dead ends: 121497 [2023-12-20 15:03:17,116 INFO L226 Difference]: Without dead ends: 50266 [2023-12-20 15:03:17,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:17,148 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 627 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:17,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 44 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:03:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50266 states. [2023-12-20 15:03:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50266 to 42541. [2023-12-20 15:03:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42541 states, 42540 states have (on average 1.1075693464974141) internal successors, (47116), 42540 states have internal predecessors, (47116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42541 states to 42541 states and 47116 transitions. [2023-12-20 15:03:17,717 INFO L78 Accepts]: Start accepts. Automaton has 42541 states and 47116 transitions. Word has length 298 [2023-12-20 15:03:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:17,717 INFO L495 AbstractCegarLoop]: Abstraction has 42541 states and 47116 transitions. [2023-12-20 15:03:17,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 42541 states and 47116 transitions. [2023-12-20 15:03:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-20 15:03:17,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:17,744 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:17,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 15:03:17,745 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:17,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1013035275, now seen corresponding path program 1 times [2023-12-20 15:03:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:17,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511437522] [2023-12-20 15:03:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-20 15:03:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511437522] [2023-12-20 15:03:18,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511437522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:18,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:18,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:03:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701446759] [2023-12-20 15:03:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:03:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:03:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:18,193 INFO L87 Difference]: Start difference. First operand 42541 states and 47116 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:19,171 INFO L93 Difference]: Finished difference Result 84497 states and 93635 transitions. [2023-12-20 15:03:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:03:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 316 [2023-12-20 15:03:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:19,206 INFO L225 Difference]: With dead ends: 84497 [2023-12-20 15:03:19,206 INFO L226 Difference]: Without dead ends: 41958 [2023-12-20 15:03:19,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:19,228 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 352 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:19,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 82 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:03:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41958 states. [2023-12-20 15:03:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41958 to 41526. [2023-12-20 15:03:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41526 states, 41525 states have (on average 1.1069476219145093) internal successors, (45966), 41525 states have internal predecessors, (45966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41526 states to 41526 states and 45966 transitions. [2023-12-20 15:03:19,733 INFO L78 Accepts]: Start accepts. Automaton has 41526 states and 45966 transitions. Word has length 316 [2023-12-20 15:03:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:19,733 INFO L495 AbstractCegarLoop]: Abstraction has 41526 states and 45966 transitions. [2023-12-20 15:03:19,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 41526 states and 45966 transitions. [2023-12-20 15:03:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-12-20 15:03:19,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:19,759 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-12-20 15:03:19,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 15:03:19,759 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:19,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1908000071, now seen corresponding path program 1 times [2023-12-20 15:03:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873304762] [2023-12-20 15:03:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:19,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 15:03:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:20,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873304762] [2023-12-20 15:03:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873304762] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:20,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016701282] [2023-12-20 15:03:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:20,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:20,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:20,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:20,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 15:03:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:20,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 15:03:20,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 15:03:20,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016701282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:20,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:20,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 15:03:20,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915482291] [2023-12-20 15:03:20,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:20,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:03:20,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:03:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:03:20,516 INFO L87 Difference]: Start difference. First operand 41526 states and 45966 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:21,363 INFO L93 Difference]: Finished difference Result 80625 states and 89035 transitions. [2023-12-20 15:03:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:03:21,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2023-12-20 15:03:21,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:21,401 INFO L225 Difference]: With dead ends: 80625 [2023-12-20 15:03:21,401 INFO L226 Difference]: Without dead ends: 39100 [2023-12-20 15:03:21,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:03:21,412 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 487 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:21,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 374 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:03:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39100 states. [2023-12-20 15:03:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39100 to 31158. [2023-12-20 15:03:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31158 states, 31157 states have (on average 1.0909586930705781) internal successors, (33991), 31157 states have internal predecessors, (33991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31158 states to 31158 states and 33991 transitions. [2023-12-20 15:03:21,716 INFO L78 Accepts]: Start accepts. Automaton has 31158 states and 33991 transitions. Word has length 321 [2023-12-20 15:03:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:21,717 INFO L495 AbstractCegarLoop]: Abstraction has 31158 states and 33991 transitions. [2023-12-20 15:03:21,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 31158 states and 33991 transitions. [2023-12-20 15:03:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-20 15:03:21,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:21,735 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:21,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:21,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:21,936 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:21,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash 886144847, now seen corresponding path program 1 times [2023-12-20 15:03:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887101598] [2023-12-20 15:03:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 15:03:22,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:22,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887101598] [2023-12-20 15:03:22,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887101598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:22,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:22,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:03:22,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914845073] [2023-12-20 15:03:22,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:22,700 INFO L87 Difference]: Start difference. First operand 31158 states and 33991 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:23,228 INFO L93 Difference]: Finished difference Result 62519 states and 68196 transitions. [2023-12-20 15:03:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 357 [2023-12-20 15:03:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:23,257 INFO L225 Difference]: With dead ends: 62519 [2023-12-20 15:03:23,257 INFO L226 Difference]: Without dead ends: 31769 [2023-12-20 15:03:23,276 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 [2023-12-20 15:03:23,276 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:23,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 112 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 15:03:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31769 states. [2023-12-20 15:03:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31769 to 31767. [2023-12-20 15:03:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31767 states, 31766 states have (on average 1.090033369010892) internal successors, (34626), 31766 states have internal predecessors, (34626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31767 states to 31767 states and 34626 transitions. [2023-12-20 15:03:23,620 INFO L78 Accepts]: Start accepts. Automaton has 31767 states and 34626 transitions. Word has length 357 [2023-12-20 15:03:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:23,620 INFO L495 AbstractCegarLoop]: Abstraction has 31767 states and 34626 transitions. [2023-12-20 15:03:23,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 31767 states and 34626 transitions. [2023-12-20 15:03:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-20 15:03:23,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:23,646 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, 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, 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] [2023-12-20 15:03:23,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 15:03:23,646 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:23,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1278781769, now seen corresponding path program 1 times [2023-12-20 15:03:23,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:23,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320305036] [2023-12-20 15:03:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:23,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-20 15:03:23,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:23,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320305036] [2023-12-20 15:03:23,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320305036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:23,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:23,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:03:23,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037569769] [2023-12-20 15:03:23,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:23,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:03:23,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:03:23,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:23,902 INFO L87 Difference]: Start difference. First operand 31767 states and 34626 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:24,826 INFO L93 Difference]: Finished difference Result 75324 states and 82133 transitions. [2023-12-20 15:03:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:03:24,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2023-12-20 15:03:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:24,874 INFO L225 Difference]: With dead ends: 75324 [2023-12-20 15:03:24,875 INFO L226 Difference]: Without dead ends: 44574 [2023-12-20 15:03:24,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:24,894 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 331 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:24,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 395 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:03:24,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44574 states. [2023-12-20 15:03:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44574 to 41113. [2023-12-20 15:03:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41113 states, 41112 states have (on average 1.0835035999221638) internal successors, (44545), 41112 states have internal predecessors, (44545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41113 states to 41113 states and 44545 transitions. [2023-12-20 15:03:25,500 INFO L78 Accepts]: Start accepts. Automaton has 41113 states and 44545 transitions. Word has length 381 [2023-12-20 15:03:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:25,501 INFO L495 AbstractCegarLoop]: Abstraction has 41113 states and 44545 transitions. [2023-12-20 15:03:25,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 41113 states and 44545 transitions. [2023-12-20 15:03:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-20 15:03:25,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:25,535 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 15:03:25,535 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:25,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:25,536 INFO L85 PathProgramCache]: Analyzing trace with hash 715886918, now seen corresponding path program 1 times [2023-12-20 15:03:25,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:25,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245574072] [2023-12-20 15:03:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 15:03:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245574072] [2023-12-20 15:03:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245574072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:26,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:03:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895434958] [2023-12-20 15:03:26,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:26,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:26,045 INFO L87 Difference]: Start difference. First operand 41113 states and 44545 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:26,692 INFO L93 Difference]: Finished difference Result 90370 states and 97967 transitions. [2023-12-20 15:03:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 391 [2023-12-20 15:03:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:26,743 INFO L225 Difference]: With dead ends: 90370 [2023-12-20 15:03:26,743 INFO L226 Difference]: Without dead ends: 50070 [2023-12-20 15:03:26,770 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 [2023-12-20 15:03:26,770 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 199 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:26,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 120 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 15:03:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50070 states. [2023-12-20 15:03:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50070 to 48035. [2023-12-20 15:03:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48035 states, 48034 states have (on average 1.0858974892784279) internal successors, (52160), 48034 states have internal predecessors, (52160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48035 states to 48035 states and 52160 transitions. [2023-12-20 15:03:27,311 INFO L78 Accepts]: Start accepts. Automaton has 48035 states and 52160 transitions. Word has length 391 [2023-12-20 15:03:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:27,311 INFO L495 AbstractCegarLoop]: Abstraction has 48035 states and 52160 transitions. [2023-12-20 15:03:27,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 48035 states and 52160 transitions. [2023-12-20 15:03:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-20 15:03:27,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:27,342 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 15:03:27,342 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:27,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash -687418344, now seen corresponding path program 1 times [2023-12-20 15:03:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263284447] [2023-12-20 15:03:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-20 15:03:27,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263284447] [2023-12-20 15:03:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263284447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:03:27,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714198863] [2023-12-20 15:03:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:27,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:03:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:03:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:27,823 INFO L87 Difference]: Start difference. First operand 48035 states and 52160 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:28,834 INFO L93 Difference]: Finished difference Result 92222 states and 99980 transitions. [2023-12-20 15:03:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:03:28,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 405 [2023-12-20 15:03:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:28,880 INFO L225 Difference]: With dead ends: 92222 [2023-12-20 15:03:28,880 INFO L226 Difference]: Without dead ends: 50704 [2023-12-20 15:03:28,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 15:03:28,894 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 336 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:28,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 107 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 15:03:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50704 states. [2023-12-20 15:03:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50704 to 49257. [2023-12-20 15:03:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49257 states, 49256 states have (on average 1.0833807048887445) internal successors, (53363), 49256 states have internal predecessors, (53363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49257 states to 49257 states and 53363 transitions. [2023-12-20 15:03:29,576 INFO L78 Accepts]: Start accepts. Automaton has 49257 states and 53363 transitions. Word has length 405 [2023-12-20 15:03:29,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:29,577 INFO L495 AbstractCegarLoop]: Abstraction has 49257 states and 53363 transitions. [2023-12-20 15:03:29,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 49257 states and 53363 transitions. [2023-12-20 15:03:29,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-20 15:03:29,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:29,608 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 15:03:29,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 15:03:29,608 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:29,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:29,609 INFO L85 PathProgramCache]: Analyzing trace with hash -440264847, now seen corresponding path program 1 times [2023-12-20 15:03:29,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:29,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226102877] [2023-12-20 15:03:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:29,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-20 15:03:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:29,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226102877] [2023-12-20 15:03:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226102877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:29,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:29,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:03:29,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644480981] [2023-12-20 15:03:29,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:29,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:29,849 INFO L87 Difference]: Start difference. First operand 49257 states and 53363 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:30,359 INFO L93 Difference]: Finished difference Result 128437 states and 138931 transitions. [2023-12-20 15:03:30,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:30,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 413 [2023-12-20 15:03:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:30,430 INFO L225 Difference]: With dead ends: 128437 [2023-12-20 15:03:30,431 INFO L226 Difference]: Without dead ends: 79993 [2023-12-20 15:03:30,462 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 [2023-12-20 15:03:30,462 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 172 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:30,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 462 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 15:03:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79993 states. [2023-12-20 15:03:31,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79993 to 79983. [2023-12-20 15:03:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79983 states, 79982 states have (on average 1.0797554449751194) internal successors, (86361), 79982 states have internal predecessors, (86361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79983 states to 79983 states and 86361 transitions. [2023-12-20 15:03:31,535 INFO L78 Accepts]: Start accepts. Automaton has 79983 states and 86361 transitions. Word has length 413 [2023-12-20 15:03:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:31,536 INFO L495 AbstractCegarLoop]: Abstraction has 79983 states and 86361 transitions. [2023-12-20 15:03:31,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 79983 states and 86361 transitions. [2023-12-20 15:03:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-20 15:03:31,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:31,564 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 15:03:31,564 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:31,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 837596477, now seen corresponding path program 1 times [2023-12-20 15:03:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:31,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628555673] [2023-12-20 15:03:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:31,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 286 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:03:33,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628555673] [2023-12-20 15:03:33,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628555673] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694193883] [2023-12-20 15:03:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:33,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:33,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:33,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 15:03:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:33,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 15:03:33,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 15:03:33,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694193883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:33,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:33,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 15:03:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785618996] [2023-12-20 15:03:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:33,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 15:03:33,673 INFO L87 Difference]: Start difference. First operand 79983 states and 86361 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:34,533 INFO L93 Difference]: Finished difference Result 162003 states and 174975 transitions. [2023-12-20 15:03:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 430 [2023-12-20 15:03:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:34,617 INFO L225 Difference]: With dead ends: 162003 [2023-12-20 15:03:34,618 INFO L226 Difference]: Without dead ends: 82833 [2023-12-20 15:03:34,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 15:03:34,647 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 88 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:34,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 320 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 15:03:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82833 states. [2023-12-20 15:03:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82833 to 82829. [2023-12-20 15:03:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82829 states, 82828 states have (on average 1.0770874583474188) internal successors, (89213), 82828 states have internal predecessors, (89213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82829 states to 82829 states and 89213 transitions. [2023-12-20 15:03:35,715 INFO L78 Accepts]: Start accepts. Automaton has 82829 states and 89213 transitions. Word has length 430 [2023-12-20 15:03:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:35,716 INFO L495 AbstractCegarLoop]: Abstraction has 82829 states and 89213 transitions. [2023-12-20 15:03:35,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 82829 states and 89213 transitions. [2023-12-20 15:03:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-12-20 15:03:35,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:35,748 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:35,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:35,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:35,949 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:35,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2109784086, now seen corresponding path program 1 times [2023-12-20 15:03:35,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:35,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125345956] [2023-12-20 15:03:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 324 proven. 9 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-12-20 15:03:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:36,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125345956] [2023-12-20 15:03:36,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125345956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:36,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821132487] [2023-12-20 15:03:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:36,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:36,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:36,878 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:36,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 15:03:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:37,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 15:03:37,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-20 15:03:37,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:37,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821132487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:37,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:37,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 15:03:37,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356808190] [2023-12-20 15:03:37,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:37,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:37,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:37,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:03:37,156 INFO L87 Difference]: Start difference. First operand 82829 states and 89213 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:38,040 INFO L93 Difference]: Finished difference Result 162015 states and 174479 transitions. [2023-12-20 15:03:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 462 [2023-12-20 15:03:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:38,126 INFO L225 Difference]: With dead ends: 162015 [2023-12-20 15:03:38,126 INFO L226 Difference]: Without dead ends: 79999 [2023-12-20 15:03:38,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:03:38,160 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 211 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:38,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 324 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 15:03:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79999 states. [2023-12-20 15:03:39,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79999 to 78556. [2023-12-20 15:03:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78556 states, 78555 states have (on average 1.0707275157532938) internal successors, (84111), 78555 states have internal predecessors, (84111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78556 states to 78556 states and 84111 transitions. [2023-12-20 15:03:39,332 INFO L78 Accepts]: Start accepts. Automaton has 78556 states and 84111 transitions. Word has length 462 [2023-12-20 15:03:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:39,333 INFO L495 AbstractCegarLoop]: Abstraction has 78556 states and 84111 transitions. [2023-12-20 15:03:39,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 78556 states and 84111 transitions. [2023-12-20 15:03:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-20 15:03:39,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:39,371 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, 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, 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, 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] [2023-12-20 15:03:39,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:39,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 15:03:39,584 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:39,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash -281698159, now seen corresponding path program 1 times [2023-12-20 15:03:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:39,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627401897] [2023-12-20 15:03:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-20 15:03:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627401897] [2023-12-20 15:03:39,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627401897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:39,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:39,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 15:03:39,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569534417] [2023-12-20 15:03:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:39,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:39,798 INFO L87 Difference]: Start difference. First operand 78556 states and 84111 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:40,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:40,624 INFO L93 Difference]: Finished difference Result 140831 states and 150435 transitions. [2023-12-20 15:03:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:40,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 486 [2023-12-20 15:03:40,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:40,681 INFO L225 Difference]: With dead ends: 140831 [2023-12-20 15:03:40,681 INFO L226 Difference]: Without dead ends: 55372 [2023-12-20 15:03:40,721 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 [2023-12-20 15:03:40,722 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 209 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:40,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 286 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:03:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55372 states. [2023-12-20 15:03:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55372 to 42953. [2023-12-20 15:03:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42953 states, 42952 states have (on average 1.0484028683181226) internal successors, (45031), 42952 states have internal predecessors, (45031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42953 states to 42953 states and 45031 transitions. [2023-12-20 15:03:41,330 INFO L78 Accepts]: Start accepts. Automaton has 42953 states and 45031 transitions. Word has length 486 [2023-12-20 15:03:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:41,330 INFO L495 AbstractCegarLoop]: Abstraction has 42953 states and 45031 transitions. [2023-12-20 15:03:41,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 42953 states and 45031 transitions. [2023-12-20 15:03:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-20 15:03:41,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:41,344 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:41,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 15:03:41,345 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:41,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:41,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1471275115, now seen corresponding path program 1 times [2023-12-20 15:03:41,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:41,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452831468] [2023-12-20 15:03:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 15:03:42,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:42,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452831468] [2023-12-20 15:03:42,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452831468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:42,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:42,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:03:42,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877079118] [2023-12-20 15:03:42,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:42,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:42,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:42,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:42,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:42,073 INFO L87 Difference]: Start difference. First operand 42953 states and 45031 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:42,795 INFO L93 Difference]: Finished difference Result 90391 states and 94840 transitions. [2023-12-20 15:03:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 486 [2023-12-20 15:03:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:42,842 INFO L225 Difference]: With dead ends: 90391 [2023-12-20 15:03:42,842 INFO L226 Difference]: Without dead ends: 48048 [2023-12-20 15:03:42,864 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 [2023-12-20 15:03:42,864 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 98 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:42,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 113 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 15:03:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48048 states. [2023-12-20 15:03:43,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48048 to 47637. [2023-12-20 15:03:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47637 states, 47636 states have (on average 1.0475060878327316) internal successors, (49899), 47636 states have internal predecessors, (49899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47637 states to 47637 states and 49899 transitions. [2023-12-20 15:03:43,335 INFO L78 Accepts]: Start accepts. Automaton has 47637 states and 49899 transitions. Word has length 486 [2023-12-20 15:03:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:43,335 INFO L495 AbstractCegarLoop]: Abstraction has 47637 states and 49899 transitions. [2023-12-20 15:03:43,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 47637 states and 49899 transitions. [2023-12-20 15:03:43,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-20 15:03:43,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:43,351 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 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, 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] [2023-12-20 15:03:43,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 15:03:43,351 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 713266911, now seen corresponding path program 1 times [2023-12-20 15:03:43,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:43,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805058120] [2023-12-20 15:03:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-12-20 15:03:43,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805058120] [2023-12-20 15:03:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805058120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:43,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:43,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:03:43,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811612401] [2023-12-20 15:03:43,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:43,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:43,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:43,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:43,710 INFO L87 Difference]: Start difference. First operand 47637 states and 49899 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:44,089 INFO L93 Difference]: Finished difference Result 89572 states and 93868 transitions. [2023-12-20 15:03:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:44,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2023-12-20 15:03:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:44,144 INFO L225 Difference]: With dead ends: 89572 [2023-12-20 15:03:44,145 INFO L226 Difference]: Without dead ends: 47229 [2023-12-20 15:03:44,169 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 [2023-12-20 15:03:44,170 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:44,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 27 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 15:03:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47229 states. [2023-12-20 15:03:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47229 to 47229. [2023-12-20 15:03:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47229 states, 47228 states have (on average 1.047196578301008) internal successors, (49457), 47228 states have internal predecessors, (49457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47229 states to 47229 states and 49457 transitions. [2023-12-20 15:03:44,739 INFO L78 Accepts]: Start accepts. Automaton has 47229 states and 49457 transitions. Word has length 492 [2023-12-20 15:03:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:44,739 INFO L495 AbstractCegarLoop]: Abstraction has 47229 states and 49457 transitions. [2023-12-20 15:03:44,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 47229 states and 49457 transitions. [2023-12-20 15:03:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-20 15:03:44,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:44,756 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2023-12-20 15:03:44,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 15:03:44,757 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:44,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1104156614, now seen corresponding path program 1 times [2023-12-20 15:03:44,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:44,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333220290] [2023-12-20 15:03:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:44,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 527 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:03:46,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333220290] [2023-12-20 15:03:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333220290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265726718] [2023-12-20 15:03:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:46,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:46,844 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:46,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 15:03:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:47,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 15:03:47,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-20 15:03:47,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:47,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265726718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:47,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:47,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-20 15:03:47,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908101722] [2023-12-20 15:03:47,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:47,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:47,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:47,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:47,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-20 15:03:47,450 INFO L87 Difference]: Start difference. First operand 47229 states and 49457 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:48,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:48,102 INFO L93 Difference]: Finished difference Result 96303 states and 100898 transitions. [2023-12-20 15:03:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:48,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 507 [2023-12-20 15:03:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:48,148 INFO L225 Difference]: With dead ends: 96303 [2023-12-20 15:03:48,148 INFO L226 Difference]: Without dead ends: 47248 [2023-12-20 15:03:48,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-20 15:03:48,176 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 98 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:48,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 294 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 15:03:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47248 states. [2023-12-20 15:03:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47248 to 42983. [2023-12-20 15:03:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42983 states, 42982 states have (on average 1.047996835884789) internal successors, (45045), 42982 states have internal predecessors, (45045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42983 states to 42983 states and 45045 transitions. [2023-12-20 15:03:48,631 INFO L78 Accepts]: Start accepts. Automaton has 42983 states and 45045 transitions. Word has length 507 [2023-12-20 15:03:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:48,631 INFO L495 AbstractCegarLoop]: Abstraction has 42983 states and 45045 transitions. [2023-12-20 15:03:48,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:48,631 INFO L276 IsEmpty]: Start isEmpty. Operand 42983 states and 45045 transitions. [2023-12-20 15:03:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-20 15:03:48,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:48,647 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:48,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:48,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:48,848 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash -502245777, now seen corresponding path program 1 times [2023-12-20 15:03:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:48,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082679826] [2023-12-20 15:03:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 448 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 15:03:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:50,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082679826] [2023-12-20 15:03:50,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082679826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:50,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351174335] [2023-12-20 15:03:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:50,425 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:50,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 15:03:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:50,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 15:03:50,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 15:03:50,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:50,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351174335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:50,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:50,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-20 15:03:50,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025450375] [2023-12-20 15:03:50,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:50,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:50,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 15:03:50,926 INFO L87 Difference]: Start difference. First operand 42983 states and 45045 transitions. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:51,524 INFO L93 Difference]: Finished difference Result 85164 states and 89251 transitions. [2023-12-20 15:03:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:51,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 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 510 [2023-12-20 15:03:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:51,568 INFO L225 Difference]: With dead ends: 85164 [2023-12-20 15:03:51,569 INFO L226 Difference]: Without dead ends: 42791 [2023-12-20 15:03:51,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 15:03:51,596 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 88 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:51,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 319 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 15:03:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42791 states. [2023-12-20 15:03:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42791 to 40545. [2023-12-20 15:03:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40545 states, 40544 states have (on average 1.04659135753749) internal successors, (42433), 40544 states have internal predecessors, (42433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40545 states to 40545 states and 42433 transitions. [2023-12-20 15:03:51,987 INFO L78 Accepts]: Start accepts. Automaton has 40545 states and 42433 transitions. Word has length 510 [2023-12-20 15:03:51,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:51,988 INFO L495 AbstractCegarLoop]: Abstraction has 40545 states and 42433 transitions. [2023-12-20 15:03:51,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 40545 states and 42433 transitions. [2023-12-20 15:03:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-20 15:03:52,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:52,006 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:03:52,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:52,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 15:03:52,207 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:52,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2074555458, now seen corresponding path program 1 times [2023-12-20 15:03:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:52,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272602893] [2023-12-20 15:03:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 675 proven. 158 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-20 15:03:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272602893] [2023-12-20 15:03:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272602893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007117267] [2023-12-20 15:03:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:52,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:52,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:52,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:52,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 15:03:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:53,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:03:53,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-20 15:03:53,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:53,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007117267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:53,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:53,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 15:03:53,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124406750] [2023-12-20 15:03:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:53,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:53,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:03:53,185 INFO L87 Difference]: Start difference. First operand 40545 states and 42433 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:53,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:53,733 INFO L93 Difference]: Finished difference Result 107935 states and 113018 transitions. [2023-12-20 15:03:53,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:53,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 530 [2023-12-20 15:03:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:53,841 INFO L225 Difference]: With dead ends: 107935 [2023-12-20 15:03:53,841 INFO L226 Difference]: Without dead ends: 67391 [2023-12-20 15:03:53,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:03:53,866 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 189 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:53,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 709 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 15:03:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67391 states. [2023-12-20 15:03:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67391 to 64143. [2023-12-20 15:03:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64143 states, 64142 states have (on average 1.0442767609366717) internal successors, (66982), 64142 states have internal predecessors, (66982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64143 states to 64143 states and 66982 transitions. [2023-12-20 15:03:54,536 INFO L78 Accepts]: Start accepts. Automaton has 64143 states and 66982 transitions. Word has length 530 [2023-12-20 15:03:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:54,536 INFO L495 AbstractCegarLoop]: Abstraction has 64143 states and 66982 transitions. [2023-12-20 15:03:54,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 64143 states and 66982 transitions. [2023-12-20 15:03:54,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-20 15:03:54,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:54,557 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 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, 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, 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] [2023-12-20 15:03:54,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:54,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 15:03:54,757 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:54,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash -134931862, now seen corresponding path program 1 times [2023-12-20 15:03:54,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:54,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440752862] [2023-12-20 15:03:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:54,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 569 proven. 142 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-20 15:03:55,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:55,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440752862] [2023-12-20 15:03:55,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440752862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:03:55,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977343391] [2023-12-20 15:03:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:55,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:03:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:03:55,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:03:55,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 15:03:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:55,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:03:55,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:03:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-20 15:03:55,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:03:55,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977343391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:55,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:03:55,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-20 15:03:55,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459735263] [2023-12-20 15:03:55,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:55,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:55,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:55,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:55,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:03:55,861 INFO L87 Difference]: Start difference. First operand 64143 states and 66982 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:56,511 INFO L93 Difference]: Finished difference Result 119335 states and 124669 transitions. [2023-12-20 15:03:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 533 [2023-12-20 15:03:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:56,576 INFO L225 Difference]: With dead ends: 119335 [2023-12-20 15:03:56,576 INFO L226 Difference]: Without dead ends: 60892 [2023-12-20 15:03:56,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 15:03:56,610 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 190 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:56,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 66 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 15:03:56,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60892 states. [2023-12-20 15:03:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60892 to 60887. [2023-12-20 15:03:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60887 states, 60886 states have (on average 1.039992773379759) internal successors, (63321), 60886 states have internal predecessors, (63321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60887 states to 60887 states and 63321 transitions. [2023-12-20 15:03:57,422 INFO L78 Accepts]: Start accepts. Automaton has 60887 states and 63321 transitions. Word has length 533 [2023-12-20 15:03:57,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:03:57,423 INFO L495 AbstractCegarLoop]: Abstraction has 60887 states and 63321 transitions. [2023-12-20 15:03:57,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:03:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 60887 states and 63321 transitions. [2023-12-20 15:03:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-20 15:03:57,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:03:57,442 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, 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, 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, 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] [2023-12-20 15:03:57,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 15:03:57,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 15:03:57,643 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:03:57,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:03:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1538193865, now seen corresponding path program 1 times [2023-12-20 15:03:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:03:57,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331358467] [2023-12-20 15:03:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:03:57,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:03:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:03:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-20 15:03:58,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:03:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331358467] [2023-12-20 15:03:58,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331358467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:03:58,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 15:03:58,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 15:03:58,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12614519] [2023-12-20 15:03:58,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:03:58,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:03:58,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:03:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:03:58,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 15:03:58,262 INFO L87 Difference]: Start difference. First operand 60887 states and 63321 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 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) [2023-12-20 15:03:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:03:58,969 INFO L93 Difference]: Finished difference Result 143375 states and 149218 transitions. [2023-12-20 15:03:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:03:58,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 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 534 [2023-12-20 15:03:58,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:03:59,197 INFO L225 Difference]: With dead ends: 143375 [2023-12-20 15:03:59,198 INFO L226 Difference]: Without dead ends: 83098 [2023-12-20 15:03:59,207 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 [2023-12-20 15:03:59,209 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 110 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 15:03:59,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 79 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 15:03:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83098 states. [2023-12-20 15:03:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83098 to 75587. [2023-12-20 15:03:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75587 states, 75586 states have (on average 1.043407509327124) internal successors, (78867), 75586 states have internal predecessors, (78867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75587 states to 75587 states and 78867 transitions. [2023-12-20 15:04:00,041 INFO L78 Accepts]: Start accepts. Automaton has 75587 states and 78867 transitions. Word has length 534 [2023-12-20 15:04:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:00,041 INFO L495 AbstractCegarLoop]: Abstraction has 75587 states and 78867 transitions. [2023-12-20 15:04:00,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 2 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) [2023-12-20 15:04:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 75587 states and 78867 transitions. [2023-12-20 15:04:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-12-20 15:04:00,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:00,073 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:04:00,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 15:04:00,074 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:00,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash -161142104, now seen corresponding path program 1 times [2023-12-20 15:04:00,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:00,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90441465] [2023-12-20 15:04:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:00,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 363 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-20 15:04:01,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:01,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90441465] [2023-12-20 15:04:01,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90441465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:01,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905425762] [2023-12-20 15:04:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:01,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:01,793 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:01,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 15:04:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:02,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 15:04:02,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 15:04:02,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:02,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905425762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:02,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:02,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-20 15:04:02,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980168683] [2023-12-20 15:04:02,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:02,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:04:02,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:04:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:04:02,203 INFO L87 Difference]: Start difference. First operand 75587 states and 78867 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:02,673 INFO L93 Difference]: Finished difference Result 183756 states and 191770 transitions. [2023-12-20 15:04:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:04:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 541 [2023-12-20 15:04:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:02,796 INFO L225 Difference]: With dead ends: 183756 [2023-12-20 15:04:02,797 INFO L226 Difference]: Without dead ends: 107561 [2023-12-20 15:04:02,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:04:02,844 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 128 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:02,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 730 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 15:04:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107561 states. [2023-12-20 15:04:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107561 to 102685. [2023-12-20 15:04:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102685 states, 102684 states have (on average 1.0409606170386818) internal successors, (106890), 102684 states have internal predecessors, (106890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102685 states to 102685 states and 106890 transitions. [2023-12-20 15:04:04,290 INFO L78 Accepts]: Start accepts. Automaton has 102685 states and 106890 transitions. Word has length 541 [2023-12-20 15:04:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:04,290 INFO L495 AbstractCegarLoop]: Abstraction has 102685 states and 106890 transitions. [2023-12-20 15:04:04,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 102685 states and 106890 transitions. [2023-12-20 15:04:04,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-20 15:04:04,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:04,324 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 15:04:04,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:04,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 15:04:04,533 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:04,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:04,533 INFO L85 PathProgramCache]: Analyzing trace with hash 191742959, now seen corresponding path program 1 times [2023-12-20 15:04:04,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:04,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36011519] [2023-12-20 15:04:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:04,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 652 proven. 18 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-20 15:04:05,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36011519] [2023-12-20 15:04:05,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36011519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750953023] [2023-12-20 15:04:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:05,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:05,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:05,414 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:05,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 15:04:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:05,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:04:05,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 549 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-12-20 15:04:05,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750953023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:05,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:05,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 15:04:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266598559] [2023-12-20 15:04:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:05,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:04:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:04:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:04:05,817 INFO L87 Difference]: Start difference. First operand 102685 states and 106890 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:06,614 INFO L93 Difference]: Finished difference Result 275572 states and 286783 transitions. [2023-12-20 15:04:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:04:06,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 552 [2023-12-20 15:04:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:06,818 INFO L225 Difference]: With dead ends: 275572 [2023-12-20 15:04:06,818 INFO L226 Difference]: Without dead ends: 173905 [2023-12-20 15:04:06,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 15:04:06,883 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 153 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:06,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 454 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 15:04:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173905 states. [2023-12-20 15:04:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173905 to 166945. [2023-12-20 15:04:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166945 states, 166944 states have (on average 1.0407921219091432) internal successors, (173754), 166944 states have internal predecessors, (173754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166945 states to 166945 states and 173754 transitions. [2023-12-20 15:04:09,276 INFO L78 Accepts]: Start accepts. Automaton has 166945 states and 173754 transitions. Word has length 552 [2023-12-20 15:04:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:09,276 INFO L495 AbstractCegarLoop]: Abstraction has 166945 states and 173754 transitions. [2023-12-20 15:04:09,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 166945 states and 173754 transitions. [2023-12-20 15:04:09,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-20 15:04:09,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:09,313 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-20 15:04:09,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:09,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:09,514 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:09,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash 669610857, now seen corresponding path program 1 times [2023-12-20 15:04:09,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:09,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826225650] [2023-12-20 15:04:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:09,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 866 proven. 18 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-12-20 15:04:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826225650] [2023-12-20 15:04:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826225650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012276771] [2023-12-20 15:04:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:10,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:10,768 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:10,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 15:04:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:11,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 15:04:11,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 1036 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-20 15:04:11,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:11,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012276771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:11,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:11,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-20 15:04:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234502213] [2023-12-20 15:04:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:11,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:04:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:04:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 15:04:11,465 INFO L87 Difference]: Start difference. First operand 166945 states and 173754 transitions. Second operand has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:12,720 INFO L93 Difference]: Finished difference Result 327965 states and 341529 transitions. [2023-12-20 15:04:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:04:12,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 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 632 [2023-12-20 15:04:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:13,150 INFO L225 Difference]: With dead ends: 327965 [2023-12-20 15:04:13,150 INFO L226 Difference]: Without dead ends: 162649 [2023-12-20 15:04:13,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 15:04:13,228 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 180 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:13,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 314 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:04:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162649 states. [2023-12-20 15:04:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162649 to 159604. [2023-12-20 15:04:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159604 states, 159603 states have (on average 1.0414152616178893) internal successors, (166213), 159603 states have internal predecessors, (166213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159604 states to 159604 states and 166213 transitions. [2023-12-20 15:04:15,310 INFO L78 Accepts]: Start accepts. Automaton has 159604 states and 166213 transitions. Word has length 632 [2023-12-20 15:04:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:15,310 INFO L495 AbstractCegarLoop]: Abstraction has 159604 states and 166213 transitions. [2023-12-20 15:04:15,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 159604 states and 166213 transitions. [2023-12-20 15:04:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2023-12-20 15:04:15,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:15,692 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:04:15,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:15,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 15:04:15,900 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:15,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1166344932, now seen corresponding path program 1 times [2023-12-20 15:04:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564600260] [2023-12-20 15:04:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3482 backedges. 1534 proven. 143 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2023-12-20 15:04:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564600260] [2023-12-20 15:04:18,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564600260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928244428] [2023-12-20 15:04:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:18,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:18,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:18,511 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:18,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 15:04:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:18,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:04:18,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3482 backedges. 2275 proven. 0 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2023-12-20 15:04:19,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928244428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 15:04:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303068063] [2023-12-20 15:04:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:04:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:04:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:19,195 INFO L87 Difference]: Start difference. First operand 159604 states and 166213 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:20,297 INFO L93 Difference]: Finished difference Result 313905 states and 326827 transitions. [2023-12-20 15:04:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:04:20,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 857 [2023-12-20 15:04:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:20,483 INFO L225 Difference]: With dead ends: 313905 [2023-12-20 15:04:20,483 INFO L226 Difference]: Without dead ends: 155319 [2023-12-20 15:04:20,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:20,567 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 156 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:20,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 251 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 15:04:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155319 states. [2023-12-20 15:04:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155319 to 155319. [2023-12-20 15:04:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155319 states, 155318 states have (on average 1.0395382376801143) internal successors, (161459), 155318 states have internal predecessors, (161459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155319 states to 155319 states and 161459 transitions. [2023-12-20 15:04:22,968 INFO L78 Accepts]: Start accepts. Automaton has 155319 states and 161459 transitions. Word has length 857 [2023-12-20 15:04:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:22,968 INFO L495 AbstractCegarLoop]: Abstraction has 155319 states and 161459 transitions. [2023-12-20 15:04:22,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 155319 states and 161459 transitions. [2023-12-20 15:04:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2023-12-20 15:04:23,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:23,042 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-20 15:04:23,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:23,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-20 15:04:23,243 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:23,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2122207039, now seen corresponding path program 1 times [2023-12-20 15:04:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:23,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683233912] [2023-12-20 15:04:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1446 proven. 143 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2023-12-20 15:04:25,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683233912] [2023-12-20 15:04:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683233912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150908270] [2023-12-20 15:04:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:25,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:25,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:25,930 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:25,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 15:04:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:26,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 15:04:26,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 2124 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-12-20 15:04:26,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150908270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:26,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:26,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 15:04:26,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38382449] [2023-12-20 15:04:26,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:26,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:04:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:04:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:26,675 INFO L87 Difference]: Start difference. First operand 155319 states and 161459 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:27,647 INFO L93 Difference]: Finished difference Result 273981 states and 284589 transitions. [2023-12-20 15:04:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:04:27,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 872 [2023-12-20 15:04:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:27,775 INFO L225 Difference]: With dead ends: 273981 [2023-12-20 15:04:27,775 INFO L226 Difference]: Without dead ends: 121103 [2023-12-20 15:04:27,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:27,840 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 158 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:27,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 84 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 15:04:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121103 states. [2023-12-20 15:04:29,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121103 to 114187. [2023-12-20 15:04:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114187 states, 114186 states have (on average 1.0356786296043299) internal successors, (118260), 114186 states have internal predecessors, (118260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114187 states to 114187 states and 118260 transitions. [2023-12-20 15:04:29,476 INFO L78 Accepts]: Start accepts. Automaton has 114187 states and 118260 transitions. Word has length 872 [2023-12-20 15:04:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:29,476 INFO L495 AbstractCegarLoop]: Abstraction has 114187 states and 118260 transitions. [2023-12-20 15:04:29,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 114187 states and 118260 transitions. [2023-12-20 15:04:29,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2023-12-20 15:04:29,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:29,608 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 17, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 15:04:29,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:29,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-20 15:04:29,809 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:29,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash 654030288, now seen corresponding path program 1 times [2023-12-20 15:04:29,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:29,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423129478] [2023-12-20 15:04:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:29,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6137 backedges. 2149 proven. 143 refuted. 0 times theorem prover too weak. 3845 trivial. 0 not checked. [2023-12-20 15:04:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423129478] [2023-12-20 15:04:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423129478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146635606] [2023-12-20 15:04:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:33,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:33,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:33,776 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:33,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 15:04:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:34,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:04:34,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6137 backedges. 4295 proven. 0 refuted. 0 times theorem prover too weak. 1842 trivial. 0 not checked. [2023-12-20 15:04:34,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:34,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146635606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:34,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:34,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 15:04:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822841890] [2023-12-20 15:04:34,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:34,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:04:34,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:04:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:34,506 INFO L87 Difference]: Start difference. First operand 114187 states and 118260 transitions. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:35,242 INFO L93 Difference]: Finished difference Result 282011 states and 292214 transitions. [2023-12-20 15:04:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:04:35,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 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 1240 [2023-12-20 15:04:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:35,416 INFO L225 Difference]: With dead ends: 282011 [2023-12-20 15:04:35,416 INFO L226 Difference]: Without dead ends: 169859 [2023-12-20 15:04:35,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1239 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:35,487 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 120 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:35,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 678 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 15:04:35,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169859 states. [2023-12-20 15:04:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169859 to 162342. [2023-12-20 15:04:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162342 states, 162341 states have (on average 1.0352159959591232) internal successors, (168058), 162341 states have internal predecessors, (168058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162342 states to 162342 states and 168058 transitions. [2023-12-20 15:04:38,380 INFO L78 Accepts]: Start accepts. Automaton has 162342 states and 168058 transitions. Word has length 1240 [2023-12-20 15:04:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:38,381 INFO L495 AbstractCegarLoop]: Abstraction has 162342 states and 168058 transitions. [2023-12-20 15:04:38,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 162342 states and 168058 transitions. [2023-12-20 15:04:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1335 [2023-12-20 15:04:38,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:38,540 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 19, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:04:38,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:38,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:38,741 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:38,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash 477394463, now seen corresponding path program 1 times [2023-12-20 15:04:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:38,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538589864] [2023-12-20 15:04:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7455 backedges. 2421 proven. 143 refuted. 0 times theorem prover too weak. 4891 trivial. 0 not checked. [2023-12-20 15:04:43,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:43,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538589864] [2023-12-20 15:04:43,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538589864] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:43,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963729217] [2023-12-20 15:04:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:43,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:43,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:43,112 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:43,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 15:04:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:43,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 2187 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 15:04:43,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7455 backedges. 3280 proven. 0 refuted. 0 times theorem prover too weak. 4175 trivial. 0 not checked. [2023-12-20 15:04:43,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:43,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963729217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:43,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:43,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 15:04:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502615234] [2023-12-20 15:04:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:43,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 15:04:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:43,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 15:04:43,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:43,714 INFO L87 Difference]: Start difference. First operand 162342 states and 168058 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:44,742 INFO L93 Difference]: Finished difference Result 325897 states and 337330 transitions. [2023-12-20 15:04:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 15:04:44,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 1334 [2023-12-20 15:04:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:44,944 INFO L225 Difference]: With dead ends: 325897 [2023-12-20 15:04:44,944 INFO L226 Difference]: Without dead ends: 160718 [2023-12-20 15:04:45,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 15:04:45,047 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 173 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:45,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 620 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 15:04:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160718 states. [2023-12-20 15:04:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160718 to 160718. [2023-12-20 15:04:46,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160718 states, 160717 states have (on average 1.0341780894367116) internal successors, (166210), 160717 states have internal predecessors, (166210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160718 states to 160718 states and 166210 transitions. [2023-12-20 15:04:47,104 INFO L78 Accepts]: Start accepts. Automaton has 160718 states and 166210 transitions. Word has length 1334 [2023-12-20 15:04:47,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:47,105 INFO L495 AbstractCegarLoop]: Abstraction has 160718 states and 166210 transitions. [2023-12-20 15:04:47,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:47,105 INFO L276 IsEmpty]: Start isEmpty. Operand 160718 states and 166210 transitions. [2023-12-20 15:04:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1348 [2023-12-20 15:04:47,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 15:04:47,545 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 19, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 15:04:47,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:47,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:47,746 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 15:04:47,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 15:04:47,747 INFO L85 PathProgramCache]: Analyzing trace with hash -877936615, now seen corresponding path program 1 times [2023-12-20 15:04:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 15:04:47,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630808248] [2023-12-20 15:04:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:47,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 15:04:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7573 backedges. 2442 proven. 143 refuted. 0 times theorem prover too weak. 4988 trivial. 0 not checked. [2023-12-20 15:04:51,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 15:04:51,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630808248] [2023-12-20 15:04:51,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630808248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 15:04:51,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102885738] [2023-12-20 15:04:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 15:04:51,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 15:04:51,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 15:04:51,775 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 15:04:51,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 15:04:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 15:04:52,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 15:04:52,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 15:04:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7573 backedges. 3187 proven. 0 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2023-12-20 15:04:52,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 15:04:52,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102885738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 15:04:52,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 15:04:52,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-20 15:04:52,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604798816] [2023-12-20 15:04:52,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 15:04:52,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 15:04:52,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 15:04:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 15:04:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-20 15:04:52,506 INFO L87 Difference]: Start difference. First operand 160718 states and 166210 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:53,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 15:04:53,579 INFO L93 Difference]: Finished difference Result 243722 states and 252071 transitions. [2023-12-20 15:04:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 15:04:53,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 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 1347 [2023-12-20 15:04:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 15:04:53,580 INFO L225 Difference]: With dead ends: 243722 [2023-12-20 15:04:53,580 INFO L226 Difference]: Without dead ends: 0 [2023-12-20 15:04:53,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1353 GetRequests, 1345 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-20 15:04:53,648 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 508 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 15:04:53,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 65 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 15:04:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-20 15:04:53,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-20 15:04:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-20 15:04:53,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1347 [2023-12-20 15:04:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 15:04:53,650 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-20 15:04:53,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 15:04:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-20 15:04:53,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-20 15:04:53,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 15:04:53,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 15:04:53,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-20 15:04:53,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.