/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/systemc/token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:15:10,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:15:10,214 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:15:10,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:15:10,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:15:10,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:15:10,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:15:10,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:15:10,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:15:10,243 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:15:10,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:15:10,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:15:10,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:15:10,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:15:10,245 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:15:10,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:15:10,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:15:10,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:15:10,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:15:10,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:15:10,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:15:10,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:15:10,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:15:10,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:15:10,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:15:10,247 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:15:10,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:15:10,247 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:15:10,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:15:10,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:15:10,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:15:10,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:15:10,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:15:10,249 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:15:10,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:15:10,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:15:10,250 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:15:10,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:15:10,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:15:10,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:15:10,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:15:10,448 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:15:10,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.03.cil-2.c [2023-12-21 11:15:11,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:15:11,555 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:15:11,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c [2023-12-21 11:15:11,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e616f4a/f0a06dc358ee4a2c934dc850a14858cb/FLAG6059d0308 [2023-12-21 11:15:11,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e616f4a/f0a06dc358ee4a2c934dc850a14858cb [2023-12-21 11:15:11,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:15:11,572 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:15:11,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:15:11,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:15:11,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:15:11,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15856037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11, skipping insertion in model container [2023-12-21 11:15:11,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,619 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:15:11,734 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c[671,684] [2023-12-21 11:15:11,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:15:11,786 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:15:11,793 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c[671,684] [2023-12-21 11:15:11,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:15:11,831 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:15:11,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11 WrapperNode [2023-12-21 11:15:11,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:15:11,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:15:11,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:15:11,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:15:11,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,860 INFO L138 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 339 [2023-12-21 11:15:11,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:15:11,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:15:11,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:15:11,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:15:11,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,883 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 11:15:11,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:15:11,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:15:11,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:15:11,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:15:11,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (1/1) ... [2023-12-21 11:15:11,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:15:11,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:11,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 11:15:11,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 11:15:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:15:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:15:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:15:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:15:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:15:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:15:11,970 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:15:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:15:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:15:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:15:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:15:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:15:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:15:11,971 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:15:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:15:11,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:15:12,051 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:15:12,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:15:12,328 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:15:12,353 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:15:12,354 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-21 11:15:12,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:15:12 BoogieIcfgContainer [2023-12-21 11:15:12,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:15:12,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:15:12,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:15:12,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:15:12,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:15:11" (1/3) ... [2023-12-21 11:15:12,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7383ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:15:12, skipping insertion in model container [2023-12-21 11:15:12,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:11" (2/3) ... [2023-12-21 11:15:12,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7383ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:15:12, skipping insertion in model container [2023-12-21 11:15:12,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:15:12" (3/3) ... [2023-12-21 11:15:12,359 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-2.c [2023-12-21 11:15:12,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:15:12,372 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:15:12,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:15:12,409 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;@717bf8f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:15:12,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:15:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 116 states have (on average 1.6724137931034482) internal successors, (194), 118 states have internal predecessors, (194), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 11:15:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:12,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:12,419 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] [2023-12-21 11:15:12,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:12,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash -806991754, now seen corresponding path program 1 times [2023-12-21 11:15:12,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:12,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467249584] [2023-12-21 11:15:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:12,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:12,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467249584] [2023-12-21 11:15:12,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467249584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:12,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:12,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:15:12,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000953139] [2023-12-21 11:15:12,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:12,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:15:12,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:15:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:15:12,724 INFO L87 Difference]: Start difference. First operand has 141 states, 116 states have (on average 1.6724137931034482) internal successors, (194), 118 states have internal predecessors, (194), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:13,269 INFO L93 Difference]: Finished difference Result 316 states and 517 transitions. [2023-12-21 11:15:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:15:13,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:13,278 INFO L225 Difference]: With dead ends: 316 [2023-12-21 11:15:13,279 INFO L226 Difference]: Without dead ends: 179 [2023-12-21 11:15:13,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:15:13,283 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 338 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:13,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 256 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:15:13,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-21 11:15:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 139. [2023-12-21 11:15:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 115 states have (on average 1.5478260869565217) internal successors, (178), 116 states have internal predecessors, (178), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 11:15:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 212 transitions. [2023-12-21 11:15:13,333 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 212 transitions. Word has length 70 [2023-12-21 11:15:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:13,334 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 212 transitions. [2023-12-21 11:15:13,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 212 transitions. [2023-12-21 11:15:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:13,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:13,340 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] [2023-12-21 11:15:13,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:15:13,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:13,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash -389595148, now seen corresponding path program 1 times [2023-12-21 11:15:13,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:13,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276225280] [2023-12-21 11:15:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:13,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:13,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276225280] [2023-12-21 11:15:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276225280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:15:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847407238] [2023-12-21 11:15:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:13,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:15:13,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:15:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:15:13,561 INFO L87 Difference]: Start difference. First operand 139 states and 212 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:14,217 INFO L93 Difference]: Finished difference Result 480 states and 752 transitions. [2023-12-21 11:15:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:15:14,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:14,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:14,220 INFO L225 Difference]: With dead ends: 480 [2023-12-21 11:15:14,220 INFO L226 Difference]: Without dead ends: 350 [2023-12-21 11:15:14,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:15:14,221 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 502 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:14,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 421 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:15:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-21 11:15:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 271. [2023-12-21 11:15:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 228 states have (on average 1.5570175438596492) internal successors, (355), 230 states have internal predecessors, (355), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-12-21 11:15:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 416 transitions. [2023-12-21 11:15:14,248 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 416 transitions. Word has length 70 [2023-12-21 11:15:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:14,248 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 416 transitions. [2023-12-21 11:15:14,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 416 transitions. [2023-12-21 11:15:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:14,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:14,249 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] [2023-12-21 11:15:14,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:15:14,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:14,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash 311653240, now seen corresponding path program 1 times [2023-12-21 11:15:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:14,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756639279] [2023-12-21 11:15:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:14,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:14,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:14,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756639279] [2023-12-21 11:15:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756639279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:14,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:14,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255656749] [2023-12-21 11:15:14,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:14,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:14,371 INFO L87 Difference]: Start difference. First operand 271 states and 416 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:15,231 INFO L93 Difference]: Finished difference Result 787 states and 1228 transitions. [2023-12-21 11:15:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:15:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:15,235 INFO L225 Difference]: With dead ends: 787 [2023-12-21 11:15:15,235 INFO L226 Difference]: Without dead ends: 525 [2023-12-21 11:15:15,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:15:15,241 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 509 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:15,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 781 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:15:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-21 11:15:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 395. [2023-12-21 11:15:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 333 states have (on average 1.5495495495495495) internal successors, (516), 336 states have internal predecessors, (516), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-12-21 11:15:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 603 transitions. [2023-12-21 11:15:15,287 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 603 transitions. Word has length 70 [2023-12-21 11:15:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:15,287 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 603 transitions. [2023-12-21 11:15:15,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 603 transitions. [2023-12-21 11:15:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:15,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:15,294 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] [2023-12-21 11:15:15,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:15:15,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:15,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1572570490, now seen corresponding path program 1 times [2023-12-21 11:15:15,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:15,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821674301] [2023-12-21 11:15:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:15,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:15,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:15,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821674301] [2023-12-21 11:15:15,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821674301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:15,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:15,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296985805] [2023-12-21 11:15:15,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:15,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:15,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:15,439 INFO L87 Difference]: Start difference. First operand 395 states and 603 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:15,845 INFO L93 Difference]: Finished difference Result 911 states and 1419 transitions. [2023-12-21 11:15:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:15:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:15,848 INFO L225 Difference]: With dead ends: 911 [2023-12-21 11:15:15,848 INFO L226 Difference]: Without dead ends: 525 [2023-12-21 11:15:15,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:15:15,850 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 376 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:15,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 389 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:15:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-21 11:15:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 395. [2023-12-21 11:15:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 333 states have (on average 1.5405405405405406) internal successors, (513), 336 states have internal predecessors, (513), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-12-21 11:15:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 600 transitions. [2023-12-21 11:15:15,868 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 600 transitions. Word has length 70 [2023-12-21 11:15:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:15,869 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 600 transitions. [2023-12-21 11:15:15,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 600 transitions. [2023-12-21 11:15:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:15,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:15,870 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] [2023-12-21 11:15:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:15:15,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:15,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1613245240, now seen corresponding path program 1 times [2023-12-21 11:15:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882676774] [2023-12-21 11:15:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:15,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:15,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882676774] [2023-12-21 11:15:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882676774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618568958] [2023-12-21 11:15:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:15,990 INFO L87 Difference]: Start difference. First operand 395 states and 600 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:16,837 INFO L93 Difference]: Finished difference Result 1318 states and 2031 transitions. [2023-12-21 11:15:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:15:16,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:16,842 INFO L225 Difference]: With dead ends: 1318 [2023-12-21 11:15:16,842 INFO L226 Difference]: Without dead ends: 932 [2023-12-21 11:15:16,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:15:16,843 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 616 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:16,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 772 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:15:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-12-21 11:15:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 645. [2023-12-21 11:15:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 547 states have (on average 1.5356489945155394) internal successors, (840), 552 states have internal predecessors, (840), 63 states have call successors, (63), 30 states have call predecessors, (63), 34 states have return successors, (76), 66 states have call predecessors, (76), 63 states have call successors, (76) [2023-12-21 11:15:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 979 transitions. [2023-12-21 11:15:16,868 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 979 transitions. Word has length 70 [2023-12-21 11:15:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:16,869 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 979 transitions. [2023-12-21 11:15:16,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 979 transitions. [2023-12-21 11:15:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:16,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:16,870 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] [2023-12-21 11:15:16,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:15:16,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:16,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:16,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1294936646, now seen corresponding path program 1 times [2023-12-21 11:15:16,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:16,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200639634] [2023-12-21 11:15:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:16,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:16,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:16,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200639634] [2023-12-21 11:15:16,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200639634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:16,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:16,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:16,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496209160] [2023-12-21 11:15:16,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:16,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:16,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:16,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:16,951 INFO L87 Difference]: Start difference. First operand 645 states and 979 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:17,894 INFO L93 Difference]: Finished difference Result 2220 states and 3408 transitions. [2023-12-21 11:15:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:15:17,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:17,901 INFO L225 Difference]: With dead ends: 2220 [2023-12-21 11:15:17,901 INFO L226 Difference]: Without dead ends: 1584 [2023-12-21 11:15:17,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:15:17,903 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 515 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:17,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 768 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:15:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2023-12-21 11:15:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1122. [2023-12-21 11:15:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 954 states have (on average 1.530398322851153) internal successors, (1460), 963 states have internal predecessors, (1460), 105 states have call successors, (105), 54 states have call predecessors, (105), 62 states have return successors, (140), 112 states have call predecessors, (140), 105 states have call successors, (140) [2023-12-21 11:15:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1705 transitions. [2023-12-21 11:15:17,950 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1705 transitions. Word has length 70 [2023-12-21 11:15:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:17,950 INFO L495 AbstractCegarLoop]: Abstraction has 1122 states and 1705 transitions. [2023-12-21 11:15:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1705 transitions. [2023-12-21 11:15:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:17,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:17,952 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] [2023-12-21 11:15:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:15:17,952 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:17,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -418917640, now seen corresponding path program 1 times [2023-12-21 11:15:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046246028] [2023-12-21 11:15:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046246028] [2023-12-21 11:15:18,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046246028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:18,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:18,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:18,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319940951] [2023-12-21 11:15:18,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:18,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:18,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:18,067 INFO L87 Difference]: Start difference. First operand 1122 states and 1705 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:18,432 INFO L93 Difference]: Finished difference Result 2529 states and 3892 transitions. [2023-12-21 11:15:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:15:18,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:18,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:18,437 INFO L225 Difference]: With dead ends: 2529 [2023-12-21 11:15:18,437 INFO L226 Difference]: Without dead ends: 1416 [2023-12-21 11:15:18,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:15:18,441 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 433 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:18,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 323 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:15:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-12-21 11:15:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1122. [2023-12-21 11:15:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 954 states have (on average 1.520964360587002) internal successors, (1451), 963 states have internal predecessors, (1451), 105 states have call successors, (105), 54 states have call predecessors, (105), 62 states have return successors, (140), 112 states have call predecessors, (140), 105 states have call successors, (140) [2023-12-21 11:15:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1696 transitions. [2023-12-21 11:15:18,486 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1696 transitions. Word has length 70 [2023-12-21 11:15:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:18,489 INFO L495 AbstractCegarLoop]: Abstraction has 1122 states and 1696 transitions. [2023-12-21 11:15:18,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1696 transitions. [2023-12-21 11:15:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:18,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:18,491 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] [2023-12-21 11:15:18,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:15:18,491 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:18,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:18,492 INFO L85 PathProgramCache]: Analyzing trace with hash 24983034, now seen corresponding path program 1 times [2023-12-21 11:15:18,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:18,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480906170] [2023-12-21 11:15:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:18,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480906170] [2023-12-21 11:15:18,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480906170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:18,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:18,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014091949] [2023-12-21 11:15:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:18,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:18,586 INFO L87 Difference]: Start difference. First operand 1122 states and 1696 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:19,505 INFO L93 Difference]: Finished difference Result 3801 states and 5776 transitions. [2023-12-21 11:15:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:15:19,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:19,516 INFO L225 Difference]: With dead ends: 3801 [2023-12-21 11:15:19,516 INFO L226 Difference]: Without dead ends: 2688 [2023-12-21 11:15:19,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:15:19,520 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 499 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:19,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 772 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:15:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2023-12-21 11:15:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2104. [2023-12-21 11:15:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1800 states have (on average 1.5172222222222222) internal successors, (2731), 1817 states have internal predecessors, (2731), 185 states have call successors, (185), 102 states have call predecessors, (185), 118 states have return successors, (282), 200 states have call predecessors, (282), 185 states have call successors, (282) [2023-12-21 11:15:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3198 transitions. [2023-12-21 11:15:19,598 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3198 transitions. Word has length 70 [2023-12-21 11:15:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:19,599 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3198 transitions. [2023-12-21 11:15:19,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:19,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3198 transitions. [2023-12-21 11:15:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 11:15:19,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:19,601 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] [2023-12-21 11:15:19,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:15:19,602 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:19,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1563323064, now seen corresponding path program 1 times [2023-12-21 11:15:19,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:19,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345534894] [2023-12-21 11:15:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:19,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345534894] [2023-12-21 11:15:19,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345534894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:19,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:19,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:15:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733181992] [2023-12-21 11:15:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:19,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:15:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:15:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:15:19,667 INFO L87 Difference]: Start difference. First operand 2104 states and 3198 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:20,406 INFO L93 Difference]: Finished difference Result 6005 states and 9182 transitions. [2023-12-21 11:15:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:15:20,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-12-21 11:15:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:20,421 INFO L225 Difference]: With dead ends: 6005 [2023-12-21 11:15:20,421 INFO L226 Difference]: Without dead ends: 3911 [2023-12-21 11:15:20,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:15:20,428 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 646 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:20,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 585 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:15:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2023-12-21 11:15:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3190. [2023-12-21 11:15:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 2723 states have (on average 1.5042232831435915) internal successors, (4096), 2757 states have internal predecessors, (4096), 286 states have call successors, (286), 156 states have call predecessors, (286), 180 states have return successors, (411), 292 states have call predecessors, (411), 286 states have call successors, (411) [2023-12-21 11:15:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4793 transitions. [2023-12-21 11:15:20,573 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4793 transitions. Word has length 70 [2023-12-21 11:15:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:20,573 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 4793 transitions. [2023-12-21 11:15:20,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 11:15:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4793 transitions. [2023-12-21 11:15:20,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:15:20,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:20,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:20,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:15:20,580 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:20,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1754191787, now seen corresponding path program 1 times [2023-12-21 11:15:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889195896] [2023-12-21 11:15:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:15:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:15:20,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889195896] [2023-12-21 11:15:20,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889195896] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308263138] [2023-12-21 11:15:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:20,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:15:20,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:15:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:20,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:20,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 11:15:20,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:20,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308263138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:20,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:20,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:15:20,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137391775] [2023-12-21 11:15:20,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:20,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:20,849 INFO L87 Difference]: Start difference. First operand 3190 states and 4793 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:15:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:21,076 INFO L93 Difference]: Finished difference Result 9469 states and 14323 transitions. [2023-12-21 11:15:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:21,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 114 [2023-12-21 11:15:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:21,098 INFO L225 Difference]: With dead ends: 9469 [2023-12-21 11:15:21,098 INFO L226 Difference]: Without dead ends: 6289 [2023-12-21 11:15:21,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:21,106 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 168 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:21,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 400 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2023-12-21 11:15:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 6261. [2023-12-21 11:15:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 5346 states have (on average 1.4985035540591096) internal successors, (8011), 5413 states have internal predecessors, (8011), 554 states have call successors, (554), 312 states have call predecessors, (554), 360 states have return successors, (789), 551 states have call predecessors, (789), 554 states have call successors, (789) [2023-12-21 11:15:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9354 transitions. [2023-12-21 11:15:21,387 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9354 transitions. Word has length 114 [2023-12-21 11:15:21,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:21,388 INFO L495 AbstractCegarLoop]: Abstraction has 6261 states and 9354 transitions. [2023-12-21 11:15:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:15:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9354 transitions. [2023-12-21 11:15:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:15:21,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:21,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:21,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 11:15:21,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 11:15:21,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:21,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1637627949, now seen corresponding path program 1 times [2023-12-21 11:15:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848118250] [2023-12-21 11:15:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:15:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:15:21,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:21,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848118250] [2023-12-21 11:15:21,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848118250] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:21,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979425874] [2023-12-21 11:15:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:21,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:21,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:21,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:15:21,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:15:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:21,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:21,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 11:15:21,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:21,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979425874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:21,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:21,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:15:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454992108] [2023-12-21 11:15:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:21,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:21,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:21,816 INFO L87 Difference]: Start difference. First operand 6261 states and 9354 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:15:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:22,208 INFO L93 Difference]: Finished difference Result 18602 states and 27984 transitions. [2023-12-21 11:15:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 114 [2023-12-21 11:15:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:22,258 INFO L225 Difference]: With dead ends: 18602 [2023-12-21 11:15:22,258 INFO L226 Difference]: Without dead ends: 12351 [2023-12-21 11:15:22,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:22,270 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 163 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:22,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 400 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states. [2023-12-21 11:15:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12351 to 12297. [2023-12-21 11:15:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12297 states, 10500 states have (on average 1.4924761904761905) internal successors, (15671), 10633 states have internal predecessors, (15671), 1076 states have call successors, (1076), 624 states have call predecessors, (1076), 720 states have return successors, (1531), 1055 states have call predecessors, (1531), 1076 states have call successors, (1531) [2023-12-21 11:15:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12297 states to 12297 states and 18278 transitions. [2023-12-21 11:15:22,731 INFO L78 Accepts]: Start accepts. Automaton has 12297 states and 18278 transitions. Word has length 114 [2023-12-21 11:15:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:22,731 INFO L495 AbstractCegarLoop]: Abstraction has 12297 states and 18278 transitions. [2023-12-21 11:15:22,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 11:15:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 12297 states and 18278 transitions. [2023-12-21 11:15:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 11:15:22,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:22,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:22,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:15:22,956 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 [2023-12-21 11:15:22,956 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:22,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:22,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1408306795, now seen corresponding path program 1 times [2023-12-21 11:15:22,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:22,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266075702] [2023-12-21 11:15:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:22,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:15:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:15:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266075702] [2023-12-21 11:15:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266075702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724821645] [2023-12-21 11:15:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:23,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:23,052 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) [2023-12-21 11:15:23,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:15:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:23,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:23,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 11:15:23,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:23,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724821645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:23,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:15:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827094657] [2023-12-21 11:15:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:23,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:23,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:23,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:23,203 INFO L87 Difference]: Start difference. First operand 12297 states and 18278 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:15:23,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:23,889 INFO L93 Difference]: Finished difference Result 36342 states and 54703 transitions. [2023-12-21 11:15:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:23,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2023-12-21 11:15:23,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:24,001 INFO L225 Difference]: With dead ends: 36342 [2023-12-21 11:15:24,002 INFO L226 Difference]: Without dead ends: 24056 [2023-12-21 11:15:24,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:24,025 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 180 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:24,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 556 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24056 states. [2023-12-21 11:15:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24056 to 24056. [2023-12-21 11:15:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24056 states, 20536 states have (on average 1.4848558628749513) internal successors, (30493), 20766 states have internal predecessors, (30493), 2079 states have call successors, (2079), 1248 states have call predecessors, (2079), 1440 states have return successors, (3366), 2073 states have call predecessors, (3366), 2079 states have call successors, (3366) [2023-12-21 11:15:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24056 states to 24056 states and 35938 transitions. [2023-12-21 11:15:24,970 INFO L78 Accepts]: Start accepts. Automaton has 24056 states and 35938 transitions. Word has length 114 [2023-12-21 11:15:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:24,972 INFO L495 AbstractCegarLoop]: Abstraction has 24056 states and 35938 transitions. [2023-12-21 11:15:24,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:15:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 24056 states and 35938 transitions. [2023-12-21 11:15:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 11:15:25,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:25,028 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:25,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:15:25,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:25,233 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:25,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1855746044, now seen corresponding path program 1 times [2023-12-21 11:15:25,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:25,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076796426] [2023-12-21 11:15:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:15:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:15:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-21 11:15:25,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:25,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076796426] [2023-12-21 11:15:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076796426] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:25,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680505725] [2023-12-21 11:15:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:25,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:25,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:25,343 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) [2023-12-21 11:15:25,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:15:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:25,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:25,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 11:15:25,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:25,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680505725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:25,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:25,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:15:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166232923] [2023-12-21 11:15:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:25,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:25,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:25,544 INFO L87 Difference]: Start difference. First operand 24056 states and 35938 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 11:15:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:26,930 INFO L93 Difference]: Finished difference Result 71080 states and 106857 transitions. [2023-12-21 11:15:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:26,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 147 [2023-12-21 11:15:26,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:27,069 INFO L225 Difference]: With dead ends: 71080 [2023-12-21 11:15:27,069 INFO L226 Difference]: Without dead ends: 47040 [2023-12-21 11:15:27,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:27,220 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 122 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:27,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 373 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47040 states. [2023-12-21 11:15:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47040 to 46830. [2023-12-21 11:15:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46830 states, 40154 states have (on average 1.4802759376400856) internal successors, (59439), 40612 states have internal predecessors, (59439), 3869 states have call successors, (3869), 2422 states have call predecessors, (3869), 2806 states have return successors, (6252), 3827 states have call predecessors, (6252), 3869 states have call successors, (6252) [2023-12-21 11:15:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46830 states to 46830 states and 69560 transitions. [2023-12-21 11:15:29,075 INFO L78 Accepts]: Start accepts. Automaton has 46830 states and 69560 transitions. Word has length 147 [2023-12-21 11:15:29,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:29,075 INFO L495 AbstractCegarLoop]: Abstraction has 46830 states and 69560 transitions. [2023-12-21 11:15:29,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 11:15:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 46830 states and 69560 transitions. [2023-12-21 11:15:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 11:15:29,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:29,167 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:29,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:15:29,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:29,372 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:29,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1632536281, now seen corresponding path program 1 times [2023-12-21 11:15:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547023015] [2023-12-21 11:15:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 11:15:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:15:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:15:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:15:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 11:15:29,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:29,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547023015] [2023-12-21 11:15:29,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547023015] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:29,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042888470] [2023-12-21 11:15:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:29,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:29,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:29,468 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) [2023-12-21 11:15:29,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:15:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:29,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:29,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 11:15:29,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042888470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:15:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043344678] [2023-12-21 11:15:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:29,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:29,626 INFO L87 Difference]: Start difference. First operand 46830 states and 69560 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 11:15:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:30,962 INFO L93 Difference]: Finished difference Result 73894 states and 110353 transitions. [2023-12-21 11:15:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:30,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 164 [2023-12-21 11:15:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:31,074 INFO L225 Difference]: With dead ends: 73894 [2023-12-21 11:15:31,074 INFO L226 Difference]: Without dead ends: 40990 [2023-12-21 11:15:31,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:31,123 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 141 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:31,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 223 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40990 states. [2023-12-21 11:15:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40990 to 29878. [2023-12-21 11:15:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29878 states, 25666 states have (on average 1.4331411205485858) internal successors, (36783), 25904 states have internal predecessors, (36783), 2409 states have call successors, (2409), 1610 states have call predecessors, (2409), 1802 states have return successors, (3422), 2379 states have call predecessors, (3422), 2409 states have call successors, (3422) [2023-12-21 11:15:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29878 states to 29878 states and 42614 transitions. [2023-12-21 11:15:32,490 INFO L78 Accepts]: Start accepts. Automaton has 29878 states and 42614 transitions. Word has length 164 [2023-12-21 11:15:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:32,490 INFO L495 AbstractCegarLoop]: Abstraction has 29878 states and 42614 transitions. [2023-12-21 11:15:32,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 11:15:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 29878 states and 42614 transitions. [2023-12-21 11:15:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 11:15:32,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:32,552 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, 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] [2023-12-21 11:15:32,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 11:15:32,757 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,SelfDestructingSolverStorable13 [2023-12-21 11:15:32,758 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:32,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2100041046, now seen corresponding path program 1 times [2023-12-21 11:15:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085258261] [2023-12-21 11:15:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 11:15:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:15:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:15:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:15:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 11:15:32,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:32,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085258261] [2023-12-21 11:15:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085258261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69948712] [2023-12-21 11:15:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:32,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:32,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:32,870 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) [2023-12-21 11:15:32,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:15:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:32,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 11:15:32,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-21 11:15:33,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:33,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69948712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:33,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:33,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:15:33,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337130040] [2023-12-21 11:15:33,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:33,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:33,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:33,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:33,009 INFO L87 Difference]: Start difference. First operand 29878 states and 42614 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 11:15:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:34,025 INFO L93 Difference]: Finished difference Result 52577 states and 74783 transitions. [2023-12-21 11:15:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 164 [2023-12-21 11:15:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:34,100 INFO L225 Difference]: With dead ends: 52577 [2023-12-21 11:15:34,100 INFO L226 Difference]: Without dead ends: 31904 [2023-12-21 11:15:34,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:34,133 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 147 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:34,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 411 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31904 states. [2023-12-21 11:15:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31904 to 31800. [2023-12-21 11:15:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31800 states, 27384 states have (on average 1.407865907099036) internal successors, (38553), 27622 states have internal predecessors, (38553), 2467 states have call successors, (2467), 1756 states have call predecessors, (2467), 1948 states have return successors, (3626), 2437 states have call predecessors, (3626), 2467 states have call successors, (3626) [2023-12-21 11:15:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31800 states to 31800 states and 44646 transitions. [2023-12-21 11:15:35,325 INFO L78 Accepts]: Start accepts. Automaton has 31800 states and 44646 transitions. Word has length 164 [2023-12-21 11:15:35,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:35,325 INFO L495 AbstractCegarLoop]: Abstraction has 31800 states and 44646 transitions. [2023-12-21 11:15:35,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 11:15:35,325 INFO L276 IsEmpty]: Start isEmpty. Operand 31800 states and 44646 transitions. [2023-12-21 11:15:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 11:15:35,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:35,363 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:35,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 11:15:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 11:15:35,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1232662803, now seen corresponding path program 1 times [2023-12-21 11:15:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552516093] [2023-12-21 11:15:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 11:15:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:15:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:15:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 11:15:35,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:35,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552516093] [2023-12-21 11:15:35,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552516093] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:35,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111154363] [2023-12-21 11:15:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:35,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:35,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:35,663 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) [2023-12-21 11:15:35,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 11:15:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:35,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:35,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 11:15:35,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111154363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:35,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:35,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:15:35,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879442870] [2023-12-21 11:15:35,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:35,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:35,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:35,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:35,767 INFO L87 Difference]: Start difference. First operand 31800 states and 44646 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 11:15:37,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:37,658 INFO L93 Difference]: Finished difference Result 93864 states and 133164 transitions. [2023-12-21 11:15:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:37,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 165 [2023-12-21 11:15:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:37,816 INFO L225 Difference]: With dead ends: 93864 [2023-12-21 11:15:37,816 INFO L226 Difference]: Without dead ends: 62082 [2023-12-21 11:15:37,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:37,859 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 178 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:37,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 543 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62082 states. [2023-12-21 11:15:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62082 to 62020. [2023-12-21 11:15:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62020 states, 53478 states have (on average 1.3996970716930326) internal successors, (74853), 53954 states have internal predecessors, (74853), 4729 states have call successors, (4729), 3428 states have call predecessors, (4729), 3812 states have return successors, (8200), 4669 states have call predecessors, (8200), 4729 states have call successors, (8200) [2023-12-21 11:15:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62020 states to 62020 states and 87782 transitions. [2023-12-21 11:15:40,213 INFO L78 Accepts]: Start accepts. Automaton has 62020 states and 87782 transitions. Word has length 165 [2023-12-21 11:15:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:40,213 INFO L495 AbstractCegarLoop]: Abstraction has 62020 states and 87782 transitions. [2023-12-21 11:15:40,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 11:15:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 62020 states and 87782 transitions. [2023-12-21 11:15:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 11:15:40,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:40,292 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, 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] [2023-12-21 11:15:40,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 11:15:40,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:40,500 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:40,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1452335688, now seen corresponding path program 1 times [2023-12-21 11:15:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:40,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188196186] [2023-12-21 11:15:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 11:15:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:15:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:15:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-21 11:15:40,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:40,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188196186] [2023-12-21 11:15:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188196186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:40,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945184887] [2023-12-21 11:15:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:40,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:40,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:40,591 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) [2023-12-21 11:15:40,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 11:15:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:40,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:40,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 11:15:40,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:40,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945184887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:40,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:15:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151407404] [2023-12-21 11:15:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:40,758 INFO L87 Difference]: Start difference. First operand 62020 states and 87782 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 11:15:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:42,598 INFO L93 Difference]: Finished difference Result 107534 states and 154589 transitions. [2023-12-21 11:15:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:42,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 165 [2023-12-21 11:15:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:42,758 INFO L225 Difference]: With dead ends: 107534 [2023-12-21 11:15:42,758 INFO L226 Difference]: Without dead ends: 56184 [2023-12-21 11:15:42,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:42,831 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 137 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:42,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 221 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56184 states. [2023-12-21 11:15:44,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56184 to 42876. [2023-12-21 11:15:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42876 states, 37098 states have (on average 1.3640897083400723) internal successors, (50605), 37354 states have internal predecessors, (50605), 3173 states have call successors, (3173), 2412 states have call predecessors, (3173), 2604 states have return successors, (5190), 3125 states have call predecessors, (5190), 3173 states have call successors, (5190) [2023-12-21 11:15:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42876 states to 42876 states and 58968 transitions. [2023-12-21 11:15:44,594 INFO L78 Accepts]: Start accepts. Automaton has 42876 states and 58968 transitions. Word has length 165 [2023-12-21 11:15:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:44,594 INFO L495 AbstractCegarLoop]: Abstraction has 42876 states and 58968 transitions. [2023-12-21 11:15:44,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 11:15:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 42876 states and 58968 transitions. [2023-12-21 11:15:44,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 11:15:44,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:44,631 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:44,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 11:15:44,836 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,SelfDestructingSolverStorable16 [2023-12-21 11:15:44,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:44,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -476702167, now seen corresponding path program 1 times [2023-12-21 11:15:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901919231] [2023-12-21 11:15:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 11:15:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:15:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:15:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 11:15:44,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:44,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901919231] [2023-12-21 11:15:44,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901919231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:44,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097640036] [2023-12-21 11:15:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:44,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:44,925 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) [2023-12-21 11:15:44,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 11:15:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:45,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:45,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 11:15:45,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:45,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097640036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:45,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:45,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:15:45,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519894976] [2023-12-21 11:15:45,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:45,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:45,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:45,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:45,048 INFO L87 Difference]: Start difference. First operand 42876 states and 58968 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 11:15:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:47,654 INFO L93 Difference]: Finished difference Result 123032 states and 171832 transitions. [2023-12-21 11:15:47,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:47,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 165 [2023-12-21 11:15:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:47,846 INFO L225 Difference]: With dead ends: 123032 [2023-12-21 11:15:47,846 INFO L226 Difference]: Without dead ends: 80186 [2023-12-21 11:15:47,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:47,907 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 165 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:47,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 540 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80186 states. [2023-12-21 11:15:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80186 to 80184. [2023-12-21 11:15:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80184 states, 69206 states have (on average 1.3570644163800827) internal successors, (93917), 69718 states have internal predecessors, (93917), 6057 states have call successors, (6057), 4536 states have call predecessors, (6057), 4920 states have return successors, (12044), 5961 states have call predecessors, (12044), 6057 states have call successors, (12044) [2023-12-21 11:15:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80184 states to 80184 states and 112018 transitions. [2023-12-21 11:15:51,017 INFO L78 Accepts]: Start accepts. Automaton has 80184 states and 112018 transitions. Word has length 165 [2023-12-21 11:15:51,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:51,018 INFO L495 AbstractCegarLoop]: Abstraction has 80184 states and 112018 transitions. [2023-12-21 11:15:51,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 11:15:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 80184 states and 112018 transitions. [2023-12-21 11:15:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 11:15:51,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:51,089 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:15:51,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 11:15:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 11:15:51,291 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:51,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1282145970, now seen corresponding path program 1 times [2023-12-21 11:15:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085797475] [2023-12-21 11:15:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:51,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:15:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:15:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:15:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:15:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:15:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 11:15:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:15:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:15:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:15:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 11:15:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085797475] [2023-12-21 11:15:51,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085797475] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:15:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408655623] [2023-12-21 11:15:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:51,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:15:51,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:51,521 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) [2023-12-21 11:15:51,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 11:15:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:15:51,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:15:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 11:15:51,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:15:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408655623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:51,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:15:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:15:51,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668938728] [2023-12-21 11:15:51,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:51,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:15:51,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:51,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:15:51,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:51,631 INFO L87 Difference]: Start difference. First operand 80184 states and 112018 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 11:15:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:55,072 INFO L93 Difference]: Finished difference Result 156156 states and 221836 transitions. [2023-12-21 11:15:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:15:55,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 165 [2023-12-21 11:15:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:55,432 INFO L225 Difference]: With dead ends: 156156 [2023-12-21 11:15:55,432 INFO L226 Difference]: Without dead ends: 113226 [2023-12-21 11:15:55,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:55,503 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 158 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:55,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 534 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:15:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113226 states. [2023-12-21 11:15:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113226 to 113224. [2023-12-21 11:15:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113224 states, 97614 states have (on average 1.3551027516544758) internal successors, (132277), 98374 states have internal predecessors, (132277), 8633 states have call successors, (8633), 6400 states have call predecessors, (8633), 6976 states have return successors, (19436), 8481 states have call predecessors, (19436), 8633 states have call successors, (19436) [2023-12-21 11:15:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113224 states to 113224 states and 160346 transitions. [2023-12-21 11:15:59,975 INFO L78 Accepts]: Start accepts. Automaton has 113224 states and 160346 transitions. Word has length 165 [2023-12-21 11:15:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:59,976 INFO L495 AbstractCegarLoop]: Abstraction has 113224 states and 160346 transitions. [2023-12-21 11:15:59,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 11:15:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 113224 states and 160346 transitions. [2023-12-21 11:16:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 11:16:00,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:16:00,244 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, 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] [2023-12-21 11:16:00,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 11:16:00,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:00,445 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:16:00,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:16:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash 712126135, now seen corresponding path program 1 times [2023-12-21 11:16:00,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:16:00,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568713685] [2023-12-21 11:16:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:00,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:16:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:16:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:16:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:16:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:16:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:16:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:16:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 11:16:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:16:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:16:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-21 11:16:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:16:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568713685] [2023-12-21 11:16:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568713685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:16:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724778311] [2023-12-21 11:16:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:00,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:00,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:16:00,526 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) [2023-12-21 11:16:00,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 11:16:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:00,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 11:16:00,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:16:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 11:16:00,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:16:00,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724778311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:16:00,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:16:00,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:16:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179481278] [2023-12-21 11:16:00,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:16:00,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:16:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:16:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:16:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:00,650 INFO L87 Difference]: Start difference. First operand 113224 states and 160346 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 11:16:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:16:04,639 INFO L93 Difference]: Finished difference Result 229396 states and 326236 transitions. [2023-12-21 11:16:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:16:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 166 [2023-12-21 11:16:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:16:05,118 INFO L225 Difference]: With dead ends: 229396 [2023-12-21 11:16:05,118 INFO L226 Difference]: Without dead ends: 116218 [2023-12-21 11:16:05,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:05,236 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 158 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:16:05,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 364 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:16:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116218 states. [2023-12-21 11:16:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116218 to 112920. [2023-12-21 11:16:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112920 states, 97310 states have (on average 1.3452779775973693) internal successors, (130909), 98070 states have internal predecessors, (130909), 8633 states have call successors, (8633), 6400 states have call predecessors, (8633), 6976 states have return successors, (19436), 8481 states have call predecessors, (19436), 8633 states have call successors, (19436) [2023-12-21 11:16:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112920 states to 112920 states and 158978 transitions. [2023-12-21 11:16:09,872 INFO L78 Accepts]: Start accepts. Automaton has 112920 states and 158978 transitions. Word has length 166 [2023-12-21 11:16:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:16:09,873 INFO L495 AbstractCegarLoop]: Abstraction has 112920 states and 158978 transitions. [2023-12-21 11:16:09,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 11:16:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 112920 states and 158978 transitions. [2023-12-21 11:16:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 11:16:09,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:16:09,940 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, 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] [2023-12-21 11:16:09,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 11:16:10,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:10,141 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:16:10,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:16:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash 176954995, now seen corresponding path program 1 times [2023-12-21 11:16:10,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:16:10,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964157252] [2023-12-21 11:16:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:16:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:16:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 11:16:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 11:16:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:16:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:16:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:16:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 11:16:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:16:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:16:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-21 11:16:10,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:16:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964157252] [2023-12-21 11:16:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964157252] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:16:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512862025] [2023-12-21 11:16:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:10,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:16:10,222 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) [2023-12-21 11:16:10,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 11:16:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:10,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 11:16:10,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:16:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 11:16:10,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:16:10,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512862025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:16:10,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:16:10,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:16:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840453884] [2023-12-21 11:16:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:16:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:16:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:16:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:16:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:10,357 INFO L87 Difference]: Start difference. First operand 112920 states and 158978 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 11:16:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:16:14,586 INFO L93 Difference]: Finished difference Result 231778 states and 336803 transitions. [2023-12-21 11:16:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:16:14,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 166 [2023-12-21 11:16:14,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:16:15,126 INFO L225 Difference]: With dead ends: 231778 [2023-12-21 11:16:15,126 INFO L226 Difference]: Without dead ends: 118904