/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:30:30,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:30:30,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:30:30,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:30:30,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:30:30,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:30:30,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:30:30,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:30:30,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:30:30,653 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:30:30,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:30:30,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:30:30,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:30:30,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:30:30,655 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:30:30,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:30:30,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:30:30,656 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:30:30,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:30:30,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:30:30,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:30:30,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:30:30,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:30:30,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:30:30,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:30:30,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:30:30,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:30:30,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:30:30,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:30:30,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:30:30,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:30:30,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:30:30,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:30:30,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:30:30,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:30:30,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:30:30,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:30:30,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:30:30,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:30:30,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:30:30,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:30:30,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:30:30,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:30:30,661 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:30:30,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:30:30,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:30:30,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:30:30,870 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:30:30,871 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:30:30,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2023-12-19 01:30:32,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:30:32,373 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:30:32,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2023-12-19 01:30:32,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6d5cddd/e203e57c1f4841f5b7e3d0bb9005db87/FLAG183e6c7fe [2023-12-19 01:30:32,405 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6d5cddd/e203e57c1f4841f5b7e3d0bb9005db87 [2023-12-19 01:30:32,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:30:32,408 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:30:32,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:30:32,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:30:32,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:30:32,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c67ba6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32, skipping insertion in model container [2023-12-19 01:30:32,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:30:32,582 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2023-12-19 01:30:32,616 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2023-12-19 01:30:32,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:30:32,670 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:30:32,681 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2023-12-19 01:30:32,701 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2023-12-19 01:30:32,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:30:32,749 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:30:32,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32 WrapperNode [2023-12-19 01:30:32,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:30:32,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:30:32,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:30:32,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:30:32,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,815 INFO L138 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 663 [2023-12-19 01:30:32,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:30:32,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:30:32,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:30:32,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:30:32,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,849 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]. [2023-12-19 01:30:32,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,861 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:30:32,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:30:32,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:30:32,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:30:32,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (1/1) ... [2023-12-19 01:30:32,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:30:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:32,921 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) [2023-12-19 01:30:32,941 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 [2023-12-19 01:30:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:30:32,949 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:30:32,949 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:30:32,950 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-19 01:30:32,950 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-19 01:30:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:30:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:30:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:30:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:30:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:30:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:30:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:30:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:30:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:30:32,951 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:30:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:30:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:30:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:30:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:30:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:30:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:30:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:30:33,066 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:30:33,068 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:30:33,555 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:30:33,621 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:30:33,621 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-19 01:30:33,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:30:33 BoogieIcfgContainer [2023-12-19 01:30:33,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:30:33,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:30:33,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:30:33,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:30:33,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:30:32" (1/3) ... [2023-12-19 01:30:33,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f763e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:30:33, skipping insertion in model container [2023-12-19 01:30:33,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:30:32" (2/3) ... [2023-12-19 01:30:33,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f763e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:30:33, skipping insertion in model container [2023-12-19 01:30:33,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:30:33" (3/3) ... [2023-12-19 01:30:33,628 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2023-12-19 01:30:33,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:30:33,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:30:33,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:30:33,703 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;@1d28947f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:30:33,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:30:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 218 states have internal predecessors, (360), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 01:30:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 01:30:33,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:33,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:33,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:33,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1006390877, now seen corresponding path program 1 times [2023-12-19 01:30:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994230903] [2023-12-19 01:30:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:33,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:34,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:34,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994230903] [2023-12-19 01:30:34,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994230903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:34,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:34,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155533316] [2023-12-19 01:30:34,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:34,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:34,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:34,081 INFO L87 Difference]: Start difference. First operand has 250 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 218 states have internal predecessors, (360), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:34,496 INFO L93 Difference]: Finished difference Result 548 states and 898 transitions. [2023-12-19 01:30:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:34,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-19 01:30:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:34,515 INFO L225 Difference]: With dead ends: 548 [2023-12-19 01:30:34,515 INFO L226 Difference]: Without dead ends: 308 [2023-12-19 01:30:34,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:34,523 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 487 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:34,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 465 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:30:34,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-19 01:30:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 302. [2023-12-19 01:30:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 260 states have (on average 1.5346153846153847) internal successors, (399), 264 states have internal predecessors, (399), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2023-12-19 01:30:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 461 transitions. [2023-12-19 01:30:34,595 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 461 transitions. Word has length 37 [2023-12-19 01:30:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:34,595 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 461 transitions. [2023-12-19 01:30:34,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 461 transitions. [2023-12-19 01:30:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-19 01:30:34,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:34,602 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] [2023-12-19 01:30:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:30:34,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:34,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 177327675, now seen corresponding path program 1 times [2023-12-19 01:30:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280005249] [2023-12-19 01:30:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:34,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 01:30:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:34,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:34,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280005249] [2023-12-19 01:30:34,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280005249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:34,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:34,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:34,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637657169] [2023-12-19 01:30:34,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:34,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:34,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:34,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:34,686 INFO L87 Difference]: Start difference. First operand 302 states and 461 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:34,939 INFO L93 Difference]: Finished difference Result 536 states and 805 transitions. [2023-12-19 01:30:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-19 01:30:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:34,945 INFO L225 Difference]: With dead ends: 536 [2023-12-19 01:30:34,945 INFO L226 Difference]: Without dead ends: 425 [2023-12-19 01:30:34,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:34,948 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 500 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:34,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 459 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-19 01:30:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 402. [2023-12-19 01:30:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 347 states have (on average 1.4899135446685878) internal successors, (517), 352 states have internal predecessors, (517), 37 states have call successors, (37), 15 states have call predecessors, (37), 16 states have return successors, (47), 35 states have call predecessors, (47), 35 states have call successors, (47) [2023-12-19 01:30:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 601 transitions. [2023-12-19 01:30:34,982 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 601 transitions. Word has length 38 [2023-12-19 01:30:34,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:34,982 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 601 transitions. [2023-12-19 01:30:34,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 601 transitions. [2023-12-19 01:30:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 01:30:34,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:34,987 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] [2023-12-19 01:30:34,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:30:34,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:34,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1706375964, now seen corresponding path program 1 times [2023-12-19 01:30:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:34,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608442546] [2023-12-19 01:30:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 01:30:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:35,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:35,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608442546] [2023-12-19 01:30:35,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608442546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:35,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:35,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:35,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700252833] [2023-12-19 01:30:35,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:35,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:35,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:35,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:35,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:35,061 INFO L87 Difference]: Start difference. First operand 402 states and 601 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:35,347 INFO L93 Difference]: Finished difference Result 822 states and 1182 transitions. [2023-12-19 01:30:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:35,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-19 01:30:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:35,350 INFO L225 Difference]: With dead ends: 822 [2023-12-19 01:30:35,350 INFO L226 Difference]: Without dead ends: 611 [2023-12-19 01:30:35,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:35,353 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 213 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:35,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 630 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-12-19 01:30:35,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 507. [2023-12-19 01:30:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 440 states have (on average 1.4681818181818183) internal successors, (646), 447 states have internal predecessors, (646), 43 states have call successors, (43), 21 states have call predecessors, (43), 22 states have return successors, (53), 39 states have call predecessors, (53), 41 states have call successors, (53) [2023-12-19 01:30:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 742 transitions. [2023-12-19 01:30:35,384 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 742 transitions. Word has length 39 [2023-12-19 01:30:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:35,384 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 742 transitions. [2023-12-19 01:30:35,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 01:30:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 742 transitions. [2023-12-19 01:30:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 01:30:35,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:35,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:35,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:30:35,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:35,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1881139756, now seen corresponding path program 1 times [2023-12-19 01:30:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017467692] [2023-12-19 01:30:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 01:30:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:30:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:30:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:35,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017467692] [2023-12-19 01:30:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017467692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:35,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110938721] [2023-12-19 01:30:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:35,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:35,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:35,441 INFO L87 Difference]: Start difference. First operand 507 states and 742 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:35,687 INFO L93 Difference]: Finished difference Result 1023 states and 1459 transitions. [2023-12-19 01:30:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-19 01:30:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:35,691 INFO L225 Difference]: With dead ends: 1023 [2023-12-19 01:30:35,691 INFO L226 Difference]: Without dead ends: 707 [2023-12-19 01:30:35,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:35,696 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 198 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:35,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 677 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-19 01:30:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 673. [2023-12-19 01:30:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 582 states have (on average 1.4123711340206186) internal successors, (822), 591 states have internal predecessors, (822), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (77), 53 states have call predecessors, (77), 55 states have call successors, (77) [2023-12-19 01:30:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 956 transitions. [2023-12-19 01:30:35,723 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 956 transitions. Word has length 54 [2023-12-19 01:30:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:35,723 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 956 transitions. [2023-12-19 01:30:35,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 956 transitions. [2023-12-19 01:30:35,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:30:35,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:35,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:35,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:30:35,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:35,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:35,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1838751112, now seen corresponding path program 1 times [2023-12-19 01:30:35,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:35,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397979356] [2023-12-19 01:30:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:35,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 01:30:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:30:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:30:35,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397979356] [2023-12-19 01:30:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397979356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:35,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:35,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:35,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772035382] [2023-12-19 01:30:35,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:35,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:35,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:35,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:35,767 INFO L87 Difference]: Start difference. First operand 673 states and 956 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:36,006 INFO L93 Difference]: Finished difference Result 1252 states and 1735 transitions. [2023-12-19 01:30:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-19 01:30:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:36,009 INFO L225 Difference]: With dead ends: 1252 [2023-12-19 01:30:36,009 INFO L226 Difference]: Without dead ends: 850 [2023-12-19 01:30:36,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:36,011 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 486 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:36,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 471 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-12-19 01:30:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 801. [2023-12-19 01:30:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 694 states have (on average 1.3789625360230549) internal successors, (957), 705 states have internal predecessors, (957), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2023-12-19 01:30:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1113 transitions. [2023-12-19 01:30:36,067 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1113 transitions. Word has length 59 [2023-12-19 01:30:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:36,068 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1113 transitions. [2023-12-19 01:30:36,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1113 transitions. [2023-12-19 01:30:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:30:36,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:36,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:30:36,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:36,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:36,070 INFO L85 PathProgramCache]: Analyzing trace with hash 464706324, now seen corresponding path program 1 times [2023-12-19 01:30:36,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:36,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071263468] [2023-12-19 01:30:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:36,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:30:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:30:36,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:36,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071263468] [2023-12-19 01:30:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071263468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:36,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:30:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939918374] [2023-12-19 01:30:36,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:36,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:30:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:36,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:30:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:36,144 INFO L87 Difference]: Start difference. First operand 801 states and 1113 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:36,491 INFO L93 Difference]: Finished difference Result 1287 states and 1775 transitions. [2023-12-19 01:30:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-19 01:30:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:36,494 INFO L225 Difference]: With dead ends: 1287 [2023-12-19 01:30:36,494 INFO L226 Difference]: Without dead ends: 749 [2023-12-19 01:30:36,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:36,495 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 150 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:36,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 811 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:30:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-19 01:30:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 676. [2023-12-19 01:30:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 586 states have (on average 1.3822525597269624) internal successors, (810), 596 states have internal predecessors, (810), 55 states have call successors, (55), 29 states have call predecessors, (55), 33 states have return successors, (73), 51 states have call predecessors, (73), 53 states have call successors, (73) [2023-12-19 01:30:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 938 transitions. [2023-12-19 01:30:36,534 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 938 transitions. Word has length 60 [2023-12-19 01:30:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:36,534 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 938 transitions. [2023-12-19 01:30:36,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 01:30:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 938 transitions. [2023-12-19 01:30:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:30:36,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:36,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:30:36,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:36,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2032621356, now seen corresponding path program 1 times [2023-12-19 01:30:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:36,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427183071] [2023-12-19 01:30:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:30:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:30:36,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427183071] [2023-12-19 01:30:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427183071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096830700] [2023-12-19 01:30:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:36,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:36,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:36,655 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) [2023-12-19 01:30:36,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:30:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:36,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 01:30:36,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:36,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:30:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:30:36,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096830700] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:36,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 01:30:36,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-19 01:30:36,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221030146] [2023-12-19 01:30:36,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:36,923 INFO L87 Difference]: Start difference. First operand 676 states and 938 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:37,064 INFO L93 Difference]: Finished difference Result 725 states and 999 transitions. [2023-12-19 01:30:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:30:37,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-19 01:30:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:37,069 INFO L225 Difference]: With dead ends: 725 [2023-12-19 01:30:37,070 INFO L226 Difference]: Without dead ends: 722 [2023-12-19 01:30:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:30:37,071 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 662 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:37,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 419 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:30:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-12-19 01:30:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 675. [2023-12-19 01:30:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 586 states have (on average 1.378839590443686) internal successors, (808), 595 states have internal predecessors, (808), 54 states have call successors, (54), 29 states have call predecessors, (54), 33 states have return successors, (73), 51 states have call predecessors, (73), 53 states have call successors, (73) [2023-12-19 01:30:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 935 transitions. [2023-12-19 01:30:37,111 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 935 transitions. Word has length 60 [2023-12-19 01:30:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:37,112 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 935 transitions. [2023-12-19 01:30:37,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 01:30:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 935 transitions. [2023-12-19 01:30:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 01:30:37,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:37,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:37,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:37,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:37,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:37,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:37,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1412362107, now seen corresponding path program 1 times [2023-12-19 01:30:37,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:37,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275897267] [2023-12-19 01:30:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:37,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:30:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:30:37,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275897267] [2023-12-19 01:30:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275897267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609263579] [2023-12-19 01:30:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:37,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:37,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:37,454 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) [2023-12-19 01:30:37,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:30:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:37,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:30:37,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:37,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:30:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 01:30:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609263579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:30:37,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:30:37,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-19 01:30:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707207876] [2023-12-19 01:30:37,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:30:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:30:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:30:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:30:37,844 INFO L87 Difference]: Start difference. First operand 675 states and 935 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:30:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:38,509 INFO L93 Difference]: Finished difference Result 1911 states and 2587 transitions. [2023-12-19 01:30:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:30:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-19 01:30:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:38,515 INFO L225 Difference]: With dead ends: 1911 [2023-12-19 01:30:38,515 INFO L226 Difference]: Without dead ends: 1513 [2023-12-19 01:30:38,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:30:38,517 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 712 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:38,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1716 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:30:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2023-12-19 01:30:38,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1004. [2023-12-19 01:30:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 878 states have (on average 1.34624145785877) internal successors, (1182), 894 states have internal predecessors, (1182), 73 states have call successors, (73), 42 states have call predecessors, (73), 51 states have return successors, (104), 68 states have call predecessors, (104), 72 states have call successors, (104) [2023-12-19 01:30:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1359 transitions. [2023-12-19 01:30:38,557 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1359 transitions. Word has length 61 [2023-12-19 01:30:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:38,557 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1359 transitions. [2023-12-19 01:30:38,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-19 01:30:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1359 transitions. [2023-12-19 01:30:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:30:38,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:38,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:38,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:38,774 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,SelfDestructingSolverStorable7 [2023-12-19 01:30:38,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:38,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:38,775 INFO L85 PathProgramCache]: Analyzing trace with hash -825354880, now seen corresponding path program 1 times [2023-12-19 01:30:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:38,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956195845] [2023-12-19 01:30:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:38,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:30:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 01:30:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 01:30:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956195845] [2023-12-19 01:30:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956195845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:38,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:30:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622349885] [2023-12-19 01:30:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:30:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:30:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:30:38,843 INFO L87 Difference]: Start difference. First operand 1004 states and 1359 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:30:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:39,065 INFO L93 Difference]: Finished difference Result 1638 states and 2182 transitions. [2023-12-19 01:30:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 01:30:39,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-19 01:30:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:39,069 INFO L225 Difference]: With dead ends: 1638 [2023-12-19 01:30:39,069 INFO L226 Difference]: Without dead ends: 973 [2023-12-19 01:30:39,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:30:39,070 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 499 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:39,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 487 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:30:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-12-19 01:30:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 896. [2023-12-19 01:30:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 783 states have (on average 1.3461047254150702) internal successors, (1054), 799 states have internal predecessors, (1054), 66 states have call successors, (66), 37 states have call predecessors, (66), 45 states have return successors, (93), 60 states have call predecessors, (93), 65 states have call successors, (93) [2023-12-19 01:30:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1213 transitions. [2023-12-19 01:30:39,101 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1213 transitions. Word has length 78 [2023-12-19 01:30:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:39,101 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1213 transitions. [2023-12-19 01:30:39,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-19 01:30:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1213 transitions. [2023-12-19 01:30:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 01:30:39,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:39,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:39,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:30:39,104 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:39,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash -525884382, now seen corresponding path program 1 times [2023-12-19 01:30:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792472790] [2023-12-19 01:30:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 01:30:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:30:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 01:30:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 01:30:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 01:30:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 01:30:39,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:39,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792472790] [2023-12-19 01:30:39,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792472790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:39,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184145026] [2023-12-19 01:30:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:39,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:39,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:39,182 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) [2023-12-19 01:30:39,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:30:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:39,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:30:39,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:39,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184145026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:39,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:39,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 01:30:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532131881] [2023-12-19 01:30:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:39,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:30:39,287 INFO L87 Difference]: Start difference. First operand 896 states and 1213 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:30:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:39,358 INFO L93 Difference]: Finished difference Result 1181 states and 1571 transitions. [2023-12-19 01:30:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:39,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-19 01:30:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:39,360 INFO L225 Difference]: With dead ends: 1181 [2023-12-19 01:30:39,360 INFO L226 Difference]: Without dead ends: 186 [2023-12-19 01:30:39,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:30:39,363 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 55 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:39,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 704 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-19 01:30:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-19 01:30:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 160 states have (on average 1.5875) internal successors, (254), 161 states have internal predecessors, (254), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-19 01:30:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 292 transitions. [2023-12-19 01:30:39,371 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 292 transitions. Word has length 92 [2023-12-19 01:30:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:39,372 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 292 transitions. [2023-12-19 01:30:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-19 01:30:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 292 transitions. [2023-12-19 01:30:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:39,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:39,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:39,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:39,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:39,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:39,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1816193057, now seen corresponding path program 1 times [2023-12-19 01:30:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:39,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436967678] [2023-12-19 01:30:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:39,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436967678] [2023-12-19 01:30:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436967678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:39,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:39,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:30:39,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118204180] [2023-12-19 01:30:39,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:30:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:30:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:30:39,693 INFO L87 Difference]: Start difference. First operand 186 states and 292 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-19 01:30:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:40,707 INFO L93 Difference]: Finished difference Result 659 states and 1060 transitions. [2023-12-19 01:30:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:30:40,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:40,710 INFO L225 Difference]: With dead ends: 659 [2023-12-19 01:30:40,710 INFO L226 Difference]: Without dead ends: 485 [2023-12-19 01:30:40,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:30:40,712 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 715 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:40,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 634 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:30:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-12-19 01:30:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 366. [2023-12-19 01:30:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 319 states have (on average 1.5956112852664577) internal successors, (509), 321 states have internal predecessors, (509), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-12-19 01:30:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 578 transitions. [2023-12-19 01:30:40,733 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 578 transitions. Word has length 91 [2023-12-19 01:30:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:40,733 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 578 transitions. [2023-12-19 01:30:40,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-19 01:30:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 578 transitions. [2023-12-19 01:30:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:40,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:40,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:40,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:30:40,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:40,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1065505243, now seen corresponding path program 1 times [2023-12-19 01:30:40,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011324427] [2023-12-19 01:30:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:40,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:40,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:40,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:40,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011324427] [2023-12-19 01:30:40,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011324427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:40,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:40,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:40,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747335836] [2023-12-19 01:30:40,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:40,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:40,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:40,867 INFO L87 Difference]: Start difference. First operand 366 states and 578 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:42,418 INFO L93 Difference]: Finished difference Result 1084 states and 1738 transitions. [2023-12-19 01:30:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:30:42,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:42,421 INFO L225 Difference]: With dead ends: 1084 [2023-12-19 01:30:42,421 INFO L226 Difference]: Without dead ends: 730 [2023-12-19 01:30:42,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:30:42,423 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 732 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:42,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1055 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:30:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-19 01:30:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 533. [2023-12-19 01:30:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5870967741935484) internal successors, (738), 468 states have internal predecessors, (738), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-19 01:30:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 837 transitions. [2023-12-19 01:30:42,445 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 837 transitions. Word has length 91 [2023-12-19 01:30:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:42,445 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 837 transitions. [2023-12-19 01:30:42,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 837 transitions. [2023-12-19 01:30:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:42,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:42,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:42,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:30:42,446 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:42,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1152125155, now seen corresponding path program 1 times [2023-12-19 01:30:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:42,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179483990] [2023-12-19 01:30:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179483990] [2023-12-19 01:30:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179483990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:42,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:42,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850882283] [2023-12-19 01:30:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:42,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:42,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:42,573 INFO L87 Difference]: Start difference. First operand 533 states and 837 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:43,250 INFO L93 Difference]: Finished difference Result 1255 states and 2011 transitions. [2023-12-19 01:30:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:43,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:43,255 INFO L225 Difference]: With dead ends: 1255 [2023-12-19 01:30:43,255 INFO L226 Difference]: Without dead ends: 734 [2023-12-19 01:30:43,258 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 [2023-12-19 01:30:43,259 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 536 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:43,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 535 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-19 01:30:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 533. [2023-12-19 01:30:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5806451612903225) internal successors, (735), 468 states have internal predecessors, (735), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-19 01:30:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 834 transitions. [2023-12-19 01:30:43,286 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 834 transitions. Word has length 91 [2023-12-19 01:30:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:43,287 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 834 transitions. [2023-12-19 01:30:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 834 transitions. [2023-12-19 01:30:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:43,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:43,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:43,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:30:43,292 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:43,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2039348001, now seen corresponding path program 1 times [2023-12-19 01:30:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298409260] [2023-12-19 01:30:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:43,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:43,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298409260] [2023-12-19 01:30:43,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298409260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:43,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:43,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346881487] [2023-12-19 01:30:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:43,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:43,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:43,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:43,390 INFO L87 Difference]: Start difference. First operand 533 states and 834 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:43,959 INFO L93 Difference]: Finished difference Result 1251 states and 1994 transitions. [2023-12-19 01:30:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:43,962 INFO L225 Difference]: With dead ends: 1251 [2023-12-19 01:30:43,962 INFO L226 Difference]: Without dead ends: 730 [2023-12-19 01:30:43,963 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 [2023-12-19 01:30:43,964 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 609 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:43,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 448 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-19 01:30:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 533. [2023-12-19 01:30:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5741935483870968) internal successors, (732), 468 states have internal predecessors, (732), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-19 01:30:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 831 transitions. [2023-12-19 01:30:44,005 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 831 transitions. Word has length 91 [2023-12-19 01:30:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:44,005 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 831 transitions. [2023-12-19 01:30:44,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 831 transitions. [2023-12-19 01:30:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:44,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:44,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:44,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:30:44,006 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:44,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash 128305443, now seen corresponding path program 1 times [2023-12-19 01:30:44,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:44,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447606015] [2023-12-19 01:30:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:44,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:44,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:44,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447606015] [2023-12-19 01:30:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447606015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:44,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:44,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:44,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186614987] [2023-12-19 01:30:44,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:44,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:44,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:44,123 INFO L87 Difference]: Start difference. First operand 533 states and 831 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:44,802 INFO L93 Difference]: Finished difference Result 1247 states and 1977 transitions. [2023-12-19 01:30:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:44,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:44,806 INFO L225 Difference]: With dead ends: 1247 [2023-12-19 01:30:44,806 INFO L226 Difference]: Without dead ends: 726 [2023-12-19 01:30:44,809 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 [2023-12-19 01:30:44,809 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 532 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:44,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 535 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-19 01:30:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 533. [2023-12-19 01:30:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5677419354838709) internal successors, (729), 468 states have internal predecessors, (729), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-19 01:30:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 828 transitions. [2023-12-19 01:30:44,831 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 828 transitions. Word has length 91 [2023-12-19 01:30:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:44,832 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 828 transitions. [2023-12-19 01:30:44,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 828 transitions. [2023-12-19 01:30:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:44,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:44,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:44,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:30:44,833 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:44,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash 205206241, now seen corresponding path program 1 times [2023-12-19 01:30:44,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:44,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944974865] [2023-12-19 01:30:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:44,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944974865] [2023-12-19 01:30:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944974865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:44,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:44,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:44,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185187462] [2023-12-19 01:30:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:44,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:44,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:44,958 INFO L87 Difference]: Start difference. First operand 533 states and 828 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:46,372 INFO L93 Difference]: Finished difference Result 1829 states and 2877 transitions. [2023-12-19 01:30:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:30:46,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:46,379 INFO L225 Difference]: With dead ends: 1829 [2023-12-19 01:30:46,379 INFO L226 Difference]: Without dead ends: 1308 [2023-12-19 01:30:46,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:30:46,381 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 798 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:46,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 702 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:30:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2023-12-19 01:30:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 876. [2023-12-19 01:30:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 768 states have (on average 1.5598958333333333) internal successors, (1198), 773 states have internal predecessors, (1198), 73 states have call successors, (73), 30 states have call predecessors, (73), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-12-19 01:30:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1357 transitions. [2023-12-19 01:30:46,425 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1357 transitions. Word has length 91 [2023-12-19 01:30:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:46,425 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1357 transitions. [2023-12-19 01:30:46,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1357 transitions. [2023-12-19 01:30:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:46,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:46,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:46,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:30:46,426 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:46,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash -762144413, now seen corresponding path program 1 times [2023-12-19 01:30:46,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:46,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781355647] [2023-12-19 01:30:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:46,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:46,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781355647] [2023-12-19 01:30:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781355647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593001356] [2023-12-19 01:30:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:46,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:46,548 INFO L87 Difference]: Start difference. First operand 876 states and 1357 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:47,908 INFO L93 Difference]: Finished difference Result 3112 states and 4876 transitions. [2023-12-19 01:30:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:30:47,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:47,917 INFO L225 Difference]: With dead ends: 3112 [2023-12-19 01:30:47,918 INFO L226 Difference]: Without dead ends: 2248 [2023-12-19 01:30:47,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:30:47,920 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 857 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:47,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1042 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:30:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2023-12-19 01:30:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1533. [2023-12-19 01:30:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1347 states have (on average 1.5515961395694136) internal successors, (2090), 1356 states have internal predecessors, (2090), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-12-19 01:30:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2371 transitions. [2023-12-19 01:30:48,008 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2371 transitions. Word has length 91 [2023-12-19 01:30:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:48,008 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 2371 transitions. [2023-12-19 01:30:48,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2371 transitions. [2023-12-19 01:30:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:48,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:48,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:48,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:30:48,010 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:48,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1146313377, now seen corresponding path program 1 times [2023-12-19 01:30:48,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:48,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107105316] [2023-12-19 01:30:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:48,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107105316] [2023-12-19 01:30:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107105316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:48,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:48,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:48,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741252422] [2023-12-19 01:30:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:48,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:48,117 INFO L87 Difference]: Start difference. First operand 1533 states and 2371 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:48,722 INFO L93 Difference]: Finished difference Result 3507 states and 5494 transitions. [2023-12-19 01:30:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:48,730 INFO L225 Difference]: With dead ends: 3507 [2023-12-19 01:30:48,730 INFO L226 Difference]: Without dead ends: 1986 [2023-12-19 01:30:48,734 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 [2023-12-19 01:30:48,734 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 605 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:48,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 447 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:30:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2023-12-19 01:30:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1533. [2023-12-19 01:30:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1347 states have (on average 1.5449146250927988) internal successors, (2081), 1356 states have internal predecessors, (2081), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-12-19 01:30:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2362 transitions. [2023-12-19 01:30:48,842 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2362 transitions. Word has length 91 [2023-12-19 01:30:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:48,842 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 2362 transitions. [2023-12-19 01:30:48,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2362 transitions. [2023-12-19 01:30:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:48,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:48,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:48,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:30:48,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:48,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash 653687203, now seen corresponding path program 1 times [2023-12-19 01:30:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:48,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637392747] [2023-12-19 01:30:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637392747] [2023-12-19 01:30:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637392747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:48,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077711496] [2023-12-19 01:30:48,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:48,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:48,960 INFO L87 Difference]: Start difference. First operand 1533 states and 2362 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:50,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:50,347 INFO L93 Difference]: Finished difference Result 5449 states and 8476 transitions. [2023-12-19 01:30:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:30:50,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:50,361 INFO L225 Difference]: With dead ends: 5449 [2023-12-19 01:30:50,361 INFO L226 Difference]: Without dead ends: 3928 [2023-12-19 01:30:50,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:30:50,364 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 786 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:50,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1046 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:30:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2023-12-19 01:30:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 2875. [2023-12-19 01:30:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2537 states have (on average 1.5392195506503745) internal successors, (3905), 2554 states have internal predecessors, (3905), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-12-19 01:30:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4440 transitions. [2023-12-19 01:30:50,490 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4440 transitions. Word has length 91 [2023-12-19 01:30:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:50,490 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 4440 transitions. [2023-12-19 01:30:50,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:50,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4440 transitions. [2023-12-19 01:30:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:50,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:50,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:50,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:30:50,493 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:50,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1607627361, now seen corresponding path program 1 times [2023-12-19 01:30:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:50,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309039125] [2023-12-19 01:30:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:50,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309039125] [2023-12-19 01:30:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309039125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:50,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:50,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544976554] [2023-12-19 01:30:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:50,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:50,584 INFO L87 Difference]: Start difference. First operand 2875 states and 4440 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:51,268 INFO L93 Difference]: Finished difference Result 6481 states and 10113 transitions. [2023-12-19 01:30:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:30:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:51,281 INFO L225 Difference]: With dead ends: 6481 [2023-12-19 01:30:51,282 INFO L226 Difference]: Without dead ends: 3618 [2023-12-19 01:30:51,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:30:51,288 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 530 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:51,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 534 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2023-12-19 01:30:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2875. [2023-12-19 01:30:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2537 states have (on average 1.5325187229010642) internal successors, (3888), 2554 states have internal predecessors, (3888), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-12-19 01:30:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4423 transitions. [2023-12-19 01:30:51,421 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4423 transitions. Word has length 91 [2023-12-19 01:30:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:51,421 INFO L495 AbstractCegarLoop]: Abstraction has 2875 states and 4423 transitions. [2023-12-19 01:30:51,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:51,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4423 transitions. [2023-12-19 01:30:51,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:51,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:51,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:51,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:30:51,423 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:51,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash 875659935, now seen corresponding path program 1 times [2023-12-19 01:30:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057694076] [2023-12-19 01:30:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:51,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:51,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:51,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057694076] [2023-12-19 01:30:51,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057694076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:51,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:51,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:30:51,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074710258] [2023-12-19 01:30:51,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:51,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:30:51,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:51,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:30:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:30:51,557 INFO L87 Difference]: Start difference. First operand 2875 states and 4423 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-19 01:30:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:52,367 INFO L93 Difference]: Finished difference Result 6920 states and 10754 transitions. [2023-12-19 01:30:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:30:52,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:52,388 INFO L225 Difference]: With dead ends: 6920 [2023-12-19 01:30:52,388 INFO L226 Difference]: Without dead ends: 4058 [2023-12-19 01:30:52,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:30:52,399 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 321 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:52,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 607 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:30:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2023-12-19 01:30:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 2909. [2023-12-19 01:30:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2571 states have (on average 1.5254764683002722) internal successors, (3922), 2588 states have internal predecessors, (3922), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-12-19 01:30:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4457 transitions. [2023-12-19 01:30:52,654 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4457 transitions. Word has length 91 [2023-12-19 01:30:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:52,654 INFO L495 AbstractCegarLoop]: Abstraction has 2909 states and 4457 transitions. [2023-12-19 01:30:52,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-12-19 01:30:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4457 transitions. [2023-12-19 01:30:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:30:52,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:52,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:52,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:30:52,657 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:52,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1309389021, now seen corresponding path program 1 times [2023-12-19 01:30:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995829801] [2023-12-19 01:30:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:52,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:52,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:52,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:52,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995829801] [2023-12-19 01:30:52,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995829801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:52,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:30:52,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:30:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004716569] [2023-12-19 01:30:52,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:52,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:30:52,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:52,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:30:52,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:52,831 INFO L87 Difference]: Start difference. First operand 2909 states and 4457 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:54,721 INFO L93 Difference]: Finished difference Result 13496 states and 21304 transitions. [2023-12-19 01:30:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:30:54,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-12-19 01:30:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:54,780 INFO L225 Difference]: With dead ends: 13496 [2023-12-19 01:30:54,781 INFO L226 Difference]: Without dead ends: 10600 [2023-12-19 01:30:54,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-19 01:30:54,793 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1884 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:54,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 887 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:30:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2023-12-19 01:30:55,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 8574. [2023-12-19 01:30:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8574 states, 7567 states have (on average 1.516585172459363) internal successors, (11476), 7643 states have internal predecessors, (11476), 646 states have call successors, (646), 312 states have call predecessors, (646), 360 states have return successors, (1067), 634 states have call predecessors, (1067), 646 states have call successors, (1067) [2023-12-19 01:30:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8574 states to 8574 states and 13189 transitions. [2023-12-19 01:30:55,256 INFO L78 Accepts]: Start accepts. Automaton has 8574 states and 13189 transitions. Word has length 91 [2023-12-19 01:30:55,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:55,256 INFO L495 AbstractCegarLoop]: Abstraction has 8574 states and 13189 transitions. [2023-12-19 01:30:55,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-12-19 01:30:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8574 states and 13189 transitions. [2023-12-19 01:30:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:30:55,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:55,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:55,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:30:55,272 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:55,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash -278492410, now seen corresponding path program 1 times [2023-12-19 01:30:55,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:55,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341237226] [2023-12-19 01:30:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:55,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:30:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 01:30:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 01:30:55,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:55,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341237226] [2023-12-19 01:30:55,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341237226] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:55,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869924508] [2023-12-19 01:30:55,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:55,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:55,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:55,396 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) [2023-12-19 01:30:55,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:30:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:55,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:55,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 01:30:55,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869924508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:55,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:30:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342996479] [2023-12-19 01:30:55,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:55,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:55,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:55,599 INFO L87 Difference]: Start difference. First operand 8574 states and 13189 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-12-19 01:30:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:56,370 INFO L93 Difference]: Finished difference Result 25487 states and 39605 transitions. [2023-12-19 01:30:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:56,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 147 [2023-12-19 01:30:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:56,416 INFO L225 Difference]: With dead ends: 25487 [2023-12-19 01:30:56,416 INFO L226 Difference]: Without dead ends: 16926 [2023-12-19 01:30:56,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:56,438 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 233 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:56,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 497 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16926 states. [2023-12-19 01:30:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16926 to 16872. [2023-12-19 01:30:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16872 states, 14915 states have (on average 1.5133087495809587) internal successors, (22571), 15066 states have internal predecessors, (22571), 1236 states have call successors, (1236), 624 states have call predecessors, (1236), 720 states have return successors, (2036), 1197 states have call predecessors, (2036), 1236 states have call successors, (2036) [2023-12-19 01:30:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16872 states to 16872 states and 25843 transitions. [2023-12-19 01:30:57,239 INFO L78 Accepts]: Start accepts. Automaton has 16872 states and 25843 transitions. Word has length 147 [2023-12-19 01:30:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:57,239 INFO L495 AbstractCegarLoop]: Abstraction has 16872 states and 25843 transitions. [2023-12-19 01:30:57,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2023-12-19 01:30:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16872 states and 25843 transitions. [2023-12-19 01:30:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:30:57,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:57,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:57,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:30:57,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:57,471 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:57,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1743474172, now seen corresponding path program 1 times [2023-12-19 01:30:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:57,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763538980] [2023-12-19 01:30:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:30:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:30:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:30:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:30:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:30:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:30:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:30:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 01:30:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 01:30:57,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:57,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763538980] [2023-12-19 01:30:57,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763538980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:57,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867674300] [2023-12-19 01:30:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:57,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:57,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:57,579 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) [2023-12-19 01:30:57,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:30:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:57,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:30:57,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 01:30:57,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:30:57,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867674300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:30:57,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:30:57,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:30:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079553520] [2023-12-19 01:30:57,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:30:57,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:30:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:30:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:57,759 INFO L87 Difference]: Start difference. First operand 16872 states and 25843 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-12-19 01:30:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:59,352 INFO L93 Difference]: Finished difference Result 50269 states and 77826 transitions. [2023-12-19 01:30:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:30:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 147 [2023-12-19 01:30:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:59,446 INFO L225 Difference]: With dead ends: 50269 [2023-12-19 01:30:59,447 INFO L226 Difference]: Without dead ends: 33410 [2023-12-19 01:30:59,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:30:59,481 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 223 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:59,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 497 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:30:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33410 states. [2023-12-19 01:31:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33410 to 33304. [2023-12-19 01:31:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33304 states, 29451 states have (on average 1.509116838137924) internal successors, (44445), 29752 states have internal predecessors, (44445), 2412 states have call successors, (2412), 1248 states have call predecessors, (2412), 1440 states have return successors, (3967), 2319 states have call predecessors, (3967), 2412 states have call successors, (3967) [2023-12-19 01:31:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33304 states to 33304 states and 50824 transitions. [2023-12-19 01:31:01,311 INFO L78 Accepts]: Start accepts. Automaton has 33304 states and 50824 transitions. Word has length 147 [2023-12-19 01:31:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:01,311 INFO L495 AbstractCegarLoop]: Abstraction has 33304 states and 50824 transitions. [2023-12-19 01:31:01,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2023-12-19 01:31:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 33304 states and 50824 transitions. [2023-12-19 01:31:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:31:01,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:01,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:31:01,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:01,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 01:31:01,567 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:01,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash 867819138, now seen corresponding path program 1 times [2023-12-19 01:31:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:01,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725538816] [2023-12-19 01:31:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:01,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:31:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:31:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:31:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:31:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:31:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 01:31:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 01:31:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725538816] [2023-12-19 01:31:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725538816] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676271360] [2023-12-19 01:31:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:01,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:01,685 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) [2023-12-19 01:31:01,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:31:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:01,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:31:01,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 01:31:01,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:31:01,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676271360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:01,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:31:01,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:31:01,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221697890] [2023-12-19 01:31:01,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:01,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:31:01,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:01,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:31:01,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:01,849 INFO L87 Difference]: Start difference. First operand 33304 states and 50824 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-12-19 01:31:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:04,640 INFO L93 Difference]: Finished difference Result 98827 states and 151505 transitions. [2023-12-19 01:31:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:31:04,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 147 [2023-12-19 01:31:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:04,759 INFO L225 Difference]: With dead ends: 98827 [2023-12-19 01:31:04,759 INFO L226 Difference]: Without dead ends: 39112 [2023-12-19 01:31:04,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:04,840 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 254 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:31:04,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 760 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:31:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39112 states. [2023-12-19 01:31:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39112 to 39112. [2023-12-19 01:31:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39112 states, 34599 states have (on average 1.508136073296916) internal successors, (52180), 34932 states have internal predecessors, (52180), 2824 states have call successors, (2824), 1464 states have call predecessors, (2824), 1688 states have return successors, (4687), 2731 states have call predecessors, (4687), 2824 states have call successors, (4687) [2023-12-19 01:31:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39112 states to 39112 states and 59691 transitions. [2023-12-19 01:31:07,243 INFO L78 Accepts]: Start accepts. Automaton has 39112 states and 59691 transitions. Word has length 147 [2023-12-19 01:31:07,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:07,244 INFO L495 AbstractCegarLoop]: Abstraction has 39112 states and 59691 transitions. [2023-12-19 01:31:07,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-12-19 01:31:07,244 INFO L276 IsEmpty]: Start isEmpty. Operand 39112 states and 59691 transitions. [2023-12-19 01:31:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-19 01:31:07,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:07,345 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:31:07,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:07,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:07,552 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:07,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -627767361, now seen corresponding path program 1 times [2023-12-19 01:31:07,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585168300] [2023-12-19 01:31:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:31:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:31:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:31:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:31:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:31:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 01:31:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-19 01:31:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-19 01:31:07,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:07,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585168300] [2023-12-19 01:31:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585168300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:07,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190629458] [2023-12-19 01:31:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:07,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:07,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:07,673 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) [2023-12-19 01:31:07,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 01:31:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:07,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:31:07,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-19 01:31:07,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:31:07,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190629458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:07,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:31:07,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:31:07,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020806686] [2023-12-19 01:31:07,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:31:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:31:07,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:07,942 INFO L87 Difference]: Start difference. First operand 39112 states and 59691 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:31:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:10,454 INFO L93 Difference]: Finished difference Result 79956 states and 123277 transitions. [2023-12-19 01:31:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:31:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2023-12-19 01:31:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:10,627 INFO L225 Difference]: With dead ends: 79956 [2023-12-19 01:31:10,627 INFO L226 Difference]: Without dead ends: 56498 [2023-12-19 01:31:10,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:10,679 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 169 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 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 [2023-12-19 01:31:10,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 540 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:31:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56498 states. [2023-12-19 01:31:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56498 to 56284. [2023-12-19 01:31:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56284 states, 49827 states have (on average 1.5079374636241396) internal successors, (75136), 50292 states have internal predecessors, (75136), 4024 states have call successors, (4024), 2112 states have call predecessors, (4024), 2432 states have return successors, (6579), 3895 states have call predecessors, (6579), 4024 states have call successors, (6579) [2023-12-19 01:31:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56284 states to 56284 states and 85739 transitions. [2023-12-19 01:31:13,570 INFO L78 Accepts]: Start accepts. Automaton has 56284 states and 85739 transitions. Word has length 190 [2023-12-19 01:31:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:13,571 INFO L495 AbstractCegarLoop]: Abstraction has 56284 states and 85739 transitions. [2023-12-19 01:31:13,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 01:31:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 56284 states and 85739 transitions. [2023-12-19 01:31:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-19 01:31:13,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:13,634 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:31:13,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:13,840 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:13,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1773757760, now seen corresponding path program 1 times [2023-12-19 01:31:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:13,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094485803] [2023-12-19 01:31:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:31:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:31:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:31:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:31:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:31:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 01:31:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-19 01:31:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-19 01:31:13,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:13,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094485803] [2023-12-19 01:31:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094485803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:13,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306625635] [2023-12-19 01:31:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:13,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:13,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:13,975 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) [2023-12-19 01:31:13,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 01:31:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:14,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:31:14,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 01:31:14,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:31:14,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306625635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:14,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:31:14,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:31:14,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562553849] [2023-12-19 01:31:14,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:14,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:31:14,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:31:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:14,226 INFO L87 Difference]: Start difference. First operand 56284 states and 85739 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-12-19 01:31:18,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:18,730 INFO L93 Difference]: Finished difference Result 167381 states and 257323 transitions. [2023-12-19 01:31:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:31:18,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 190 [2023-12-19 01:31:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:19,073 INFO L225 Difference]: With dead ends: 167381 [2023-12-19 01:31:19,073 INFO L226 Difference]: Without dead ends: 111110 [2023-12-19 01:31:19,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:19,158 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 174 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:31:19,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 496 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:31:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111110 states. [2023-12-19 01:31:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111110 to 110756. [2023-12-19 01:31:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110756 states, 98223 states have (on average 1.5045355975687975) internal successors, (147780), 99152 states have internal predecessors, (147780), 7680 states have call successors, (7680), 4212 states have call predecessors, (7680), 4852 states have return successors, (12553), 7407 states have call predecessors, (12553), 7680 states have call successors, (12553) [2023-12-19 01:31:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110756 states to 110756 states and 168013 transitions. [2023-12-19 01:31:24,759 INFO L78 Accepts]: Start accepts. Automaton has 110756 states and 168013 transitions. Word has length 190 [2023-12-19 01:31:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:24,759 INFO L495 AbstractCegarLoop]: Abstraction has 110756 states and 168013 transitions. [2023-12-19 01:31:24,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-12-19 01:31:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 110756 states and 168013 transitions. [2023-12-19 01:31:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-19 01:31:24,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:24,890 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:31:24,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:25,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 01:31:25,098 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:25,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1669906524, now seen corresponding path program 1 times [2023-12-19 01:31:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:25,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546439102] [2023-12-19 01:31:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:31:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:31:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:31:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:31:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:31:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 01:31:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-19 01:31:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-19 01:31:25,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:25,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546439102] [2023-12-19 01:31:25,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546439102] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:25,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208811426] [2023-12-19 01:31:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:25,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:25,207 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) [2023-12-19 01:31:25,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 01:31:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:25,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:31:25,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 01:31:25,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:31:25,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208811426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:25,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:31:25,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-19 01:31:25,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67278787] [2023-12-19 01:31:25,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:31:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:31:25,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:25,459 INFO L87 Difference]: Start difference. First operand 110756 states and 168013 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-12-19 01:31:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:34,993 INFO L93 Difference]: Finished difference Result 330026 states and 505441 transitions. [2023-12-19 01:31:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:31:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 190 [2023-12-19 01:31:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:36,071 INFO L225 Difference]: With dead ends: 330026 [2023-12-19 01:31:36,072 INFO L226 Difference]: Without dead ends: 219283 [2023-12-19 01:31:36,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:36,274 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 176 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:31:36,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 496 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:31:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219283 states. [2023-12-19 01:31:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219283 to 218577. [2023-12-19 01:31:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218577 states, 193926 states have (on average 1.5001753246083558) internal successors, (290923), 195783 states have internal predecessors, (290923), 14959 states have call successors, (14959), 8411 states have call predecessors, (14959), 9691 states have return successors, (24443), 14398 states have call predecessors, (24443), 14959 states have call successors, (24443) [2023-12-19 01:31:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218577 states to 218577 states and 330325 transitions. [2023-12-19 01:31:47,156 INFO L78 Accepts]: Start accepts. Automaton has 218577 states and 330325 transitions. Word has length 190 [2023-12-19 01:31:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:31:47,157 INFO L495 AbstractCegarLoop]: Abstraction has 218577 states and 330325 transitions. [2023-12-19 01:31:47,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-12-19 01:31:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 218577 states and 330325 transitions. [2023-12-19 01:31:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-19 01:31:47,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:31:47,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:31:47,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 01:31:47,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 01:31:47,980 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:31:47,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:31:47,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1484236173, now seen corresponding path program 1 times [2023-12-19 01:31:47,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:31:47,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215063501] [2023-12-19 01:31:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:47,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:31:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:31:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-19 01:31:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 01:31:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:31:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:31:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:31:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 01:31:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-19 01:31:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-19 01:31:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-19 01:31:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-19 01:31:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:31:48,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215063501] [2023-12-19 01:31:48,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215063501] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:31:48,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767628209] [2023-12-19 01:31:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:31:48,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:31:48,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:31:48,110 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) [2023-12-19 01:31:48,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 01:31:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:31:48,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:31:48,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:31:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-19 01:31:48,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:31:48,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767628209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:31:48,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:31:48,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-19 01:31:48,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667453665] [2023-12-19 01:31:48,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:31:48,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:31:48,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:31:48,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:31:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:31:48,307 INFO L87 Difference]: Start difference. First operand 218577 states and 330325 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10)